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It's been a long time since trigonometry at school; can anyone help?

66 replies

KatyMac · 24/02/2023 20:41

I need to know x if possible

Is it sine or cosine on tan or something?

God I feel old

It's been a long time since trigonometry at school; can anyone help?
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OchonAgusOchonOh · 24/02/2023 21:02

Bimbleberries · 24/02/2023 21:01

yes double check that your calculator is set to degrees! I did that in a maths test at school once - had it set it radians, and didn't notice at first.

there might be a button labelled DRG that swaps between them. On modern calculators it seems quite hard to change it without intending to, but on older calculators, it was just hitting one button accidentally...

The bit about a squared, b squared, c squared is if you want to find the hypotenuse when given the other two legs; or find one of the legs when given the hypotenuse and the other leg.

With right angle triangles, there are two main topics that you might have to do - pythagoras (the a2 + b2 = c^2 thing) and trigonometry (the sin cos tan stuff). If you have two lengths and want to find the third one, then use pythagoras. Otherwise, if it's a mix of lengths and angles that you have or want to find, then it's probably trigonometry. If it's all about angles, then use the fact that angles of a triangle add to 180 to work out any missing angles. (There are a few other topics, like similar triangles etc, but those are the main ones).

We weren't allowed calculators in school. Didn't get to use them until uni.

OchonAgusOchonOh · 24/02/2023 21:04

KatyMac · 24/02/2023 20:59

Ok so let's go back to the beginning

I want to put the oven at an angle between 2 cupboards on a corner

So I guess the angle isn't 45 degrees.....so how do I work it out

It needs to move forward but by how much

Do you have the over? Do you have the kitchen?

Just shove it in and see what works. That's what I'd do. Much quicker.

PerkingFaintly · 24/02/2023 21:05

Move the oven forward about 25 cm.

That's assuming your cabinets are placed symmetrically. Ie the ends of the cabinets are both the same distance from the corner.

Interested in this thread?

Then you might like threads about this subject:

KatyMac · 24/02/2023 21:05

OchonAgusOchonOh · 24/02/2023 21:04

Do you have the over? Do you have the kitchen?

Just shove it in and see what works. That's what I'd do. Much quicker.

Sorry no oven housing or spare cupboards

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PhotoDad · 24/02/2023 21:07

KatyMac · 24/02/2023 20:59

Ok so let's go back to the beginning

I want to put the oven at an angle between 2 cupboards on a corner

So I guess the angle isn't 45 degrees.....so how do I work it out

It needs to move forward but by how much

It needs to move 248.5.

The hypotenuse of the triangle with two 600 sides is 848.5, and the oven is already 600 units long.

BoringLittleMe · 24/02/2023 21:07

QueenMabs · 24/02/2023 20:55

All i can muster is sohcahtoa

Not much help but yes i could figure it out if I googled a bit.

I get SOHCAHTOA in my head too!

I think it's Sine=opposite/hypotenuse, Cosine=adjacent/hypotenuse and tangent=opposite/adjacent.

But I wouldn't be 100% sure that was right, nor have much confidence that any maths I did with it afterwards was accurate.

It's odd what stays in the mind after 25 years, isn't it?

Bimbleberries · 24/02/2023 21:08

I think it depends actually on how far your cupboards are from the corner.

PhotoDad · 24/02/2023 21:08

PerkingFaintly · 24/02/2023 21:05

Move the oven forward about 25 cm.

That's assuming your cabinets are placed symmetrically. Ie the ends of the cabinets are both the same distance from the corner.

Beat me to it!

PerkingFaintly · 24/02/2023 21:09

And you will need both your cabinet ends to be a touch over 102 cm from that corner.

Bimbleberries · 24/02/2023 21:10

Or maybe I'm misunderstanding your problem. Are the cupboards already there? And if so, how far are they from the corner? Are you sure there is a 60 cm gap between them that fits perfectly?

Or are you installing the oven and the cupboards, in which case you are able to position the cupboards so that there is exactly a 60cm gap for the cooker between them?

PerkingFaintly · 24/02/2023 21:10

It turns out that "√2 = 1.42" is engraved somewhere in the accessible recesses of my brain.

Unlike whether I've put the bins out or locked the front door.

feellikeanalien · 24/02/2023 21:12

Well this thread has just shown me that I have forgotten all the trigonometry I ever knew.

KatyMac · 24/02/2023 21:12

I'm planning the kitchen

I'm happy to lose the corners in the base units but I'd like to work out wall units going into the corner

It's so hard

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Hafnir · 24/02/2023 21:13

If I was trying to work this out I would be cutting up bits of graph paper! 🙈
I have a visual brain not a maths one!

KatyMac · 24/02/2023 21:15

Here

It's been a long time since trigonometry at school; can anyone help?
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titchy · 24/02/2023 21:15

If one angle is 45 degrees and the other one is a square, then the two lengths are the same! So it's 60!

titchy · 24/02/2023 21:18

But don't move the oven forward, keep where it is and have slightly longer lengths of unit both ways. You're wasting so much space otherwise.

PerkingFaintly · 24/02/2023 21:19

That diag looks fine. You've got the cabinets starting 1093 mm from the corner, which gives you some nice wiggle room.

When the cabinets are, in put the oven in and bring it forward by eye till it nicely fits the gap.

Bimbleberries · 24/02/2023 21:22

It's going to give you a very long reach to get into that corner behind the oven, though! What will you use that space for? It'll be hard to clean if you can't easily reach it and it gets grease or other cooking mess back there. Will there be a splashback or something on the walls there?

But the plan looks fine otherwise. What do you need to measure? Are you sure that the cooker is actually 60cm deep as well?

Bimbleberries · 24/02/2023 21:25

Does the 1093mm length actually give you exactly 60cm between the cupbaords? I think it might give you slightly extra space, which would be fine - but are you putting some kind of divider between the cupboards and oven? What is going to fill those awkward triangle spaces?

KatyMac · 24/02/2023 21:28

Initially I was just going to box it in

But now I'm wondering if I could get longer cupboard and cut them at an angle so I can reach into them (eg an 800 with a 400 door maybe?)

It's been a long time since trigonometry at school; can anyone help?
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KatyMac · 24/02/2023 21:29

But maybe only the wall units as I can barely get into base cupboards anyway

OP posts:
Soontobe60 · 24/02/2023 21:29

Just put the oven square against the wall where it says 4mm! Then you’ll have accessible space into the corner where you can put lots of thing!

Jux · 24/02/2023 21:29

How would you get in to clean in those gaps betweeb cooker and cupboards?

JulieMarooley · 24/02/2023 21:30

The answer to the OP question is 60 but the oven needs to be pulled out 248.5 from the wall (measured parallel to sides of oven) per a PP above. Square root of [600 squared plus 600 squared], minus 600 which is the depth of oven.

Because it is at 45 degrees it means the two short sides are the same length, so you don’t need sohcahtoa etc.

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