Question

11

Answer 1

hypotenuse^2 = leg1^2 + leg2^2

Answer 2

I thought I just did.

Anyway the hypotenuse is always the longest side of a right triangle.
The other 2 sides are sometimes called legs
If we were to square all 3 sides then
hypotenuse^2 = leg1^2 + leg2^2

Example:
If we have a right triangle of sides 3, 4 and 5
5 is hypotenuse
if we square it, it equals sum of other 2 sides
5^2 = 3^2 + 4^2
25 = 9 + 16

Answer 3

Okay you typed the other question while I was giving the OTHER explanation.
Okay now to explain sin^2 theta + cos^2 theta = 1

Answer 4

sine = opposite side/hypotenuse OR sine = y/hyp
cosine = adjacent side/hypotenuse OR sine = x/hyp

Answer 5

sine^2 = y^2/hyp^2
cosine^2 = x^2/hyp^2