Thank you.

it's not sin its using the formula

hyp=leg * square root of two

Any ways thanks for helping

Thank you and your assumption was correct.

Theres a triangle inside theres a pole that measures 12 meters on one side of it in the inside there is 45 degree angle on the other side in the inside theres is a 30 degree angle.

Yor assumption was correct with ac being the hypotenuse.

I didnt know i could add photos before.

yes I'm sure that the Pythagorean theorem was needed.