Question

Find the values of the sine, cosine, and tangent for angle A.

Answer 1

I know that the answer is neither B nor C

Answer 2

What makes you think that?

Answer 3

any comment?

Answer 4

because the tangent = opp/adj and the opp is 24 and the adj is 36, so the tangent is 24/36 which reduces to 2/3; making tan A=3/2 a wrong answer.

Answer 5

Is that correct @alekos ?

Answer 6

Tan A is 24/36 which reduces to 2/3 so tanA must be 2/3

Answer 7

you just need to work out the hypotenuse any ideas?

Answer 8

Pythagorean theorem?

Answer 9

yep. thats it

Answer 10

Can you walk me through that? I'm kind of rusty as you can probably tell.

Answer 11

sure can, but I'll only give you hints

pythagoras said that in any right angled triangle the square of the hypotenuse is equal to the sum of the squares of the other two sides

Answer 12

a^2+b^2=c^2

Answer 13

so it's 36^2+24^2=1872

Answer 14

but what do I do from there?

Answer 15

I got the answer. It was D. Thanks for your help

Answer 16

no probs, your welcome. well done