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

[KatyMac]

I need to know x if possible

Is it sine or cosine on tan or something?

God I feel old

I think Tan (45) = x/60

so tan(45) = 1.61978 = x/60 so x = 1.61978 x 60 = 97.1865

Mind you, I could be completely wrong. I left school over 40 years ago.

I got the same but I could be wrong!

Won't it just be 60 as if that angle is 45 degrees the other one will be as well, so it's an isosceles triangle?

My head is screaming A SQUARED PLUS B SQUARED = C SQUARED but I've no idea how to practically apply any of that

Oh hang on you didn't say that one was a right angle ignore me!

60 multiplied by tan 45 = X

Math teacher

It's 60.

Is the angle between x and 60 a right angle?

You've done 45 radians instead of 45 degrees for the tan function

So what does that make the hypotenuse?

I am lost

This is me!!

If the angle between x and 60 is a right-angle, then that's an isoceles triangle 45°, 45°, 90°, and x is 60. Wot namechange3394 said.

If the angle between x and 60 is NOT a right-angle, then you can't use trigonometry and you don't have enough information to solve for x.

Yes between 60 and x is a right angle

Right method, but tan(45) is 1, which is why people are getting 60 - as it should be, as the other angle must be 45 too, so it's isosceles.

assuming that it is a right angle triangle, of course, which is probably what the OP meant for this sort of maths question.

If it's not, then no, you can't tell what x is.

For a right angled triangle, tan(angle) is the opposite side divided by the adjacent side.

X is 60

The hypotenuse is 84.85

All i can muster is sohcahtoa

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

Nah, Google did 😂

I thought it was a bit odd that the number wasn't more even. So after re-writing my google from tan(45) to what is tan of 45 degrees, the answer is 60 as apparently tan (45 degrees) is 1.

It does ring a bell now that I see it.

At least I had the method right!

Most mobile phones use radians as the default. Some only do radians even if they pretend to have deg. Oh that used to be fun in a maths lesson.

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

Use trig not pythagoras as an angle is given

Label triangle

SOH CAH TOA

Use tan as you have the opposite and adjacent tan 45 = x/10 and therefore 10tan45=x

The side opposite the right angle is the hypotenuse.

You will be dealing with the opposite and adjacent so its tan you use

Tan (45) = x/60
X = 60 x tan (45)

That's a bit stupid given you're generally dealing with degrees.

I use google and first hit was some sort of google calculator which, now that I look at it more closely, actually told me it was calculating for radians.

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).

Sorry 60 not 10 typo!