Question

I need someone to explain to me how to do this pleaseee!!! question is in an attachment.

Answer 1

The side opposite to the right angle is the hypotenuse. Use cosine or sine to solve for the other sides.

Answer 2

cos(45) = 7 / x => x = 7 / cos(45) => x = 9.9

Answer 3

The other angle is 45.
so this is a 45-90-45 triangle, x=(square root of 2 )*7.
y=7

Answer 4

so when it is a 45/90/45 triangle all i have to do is multiply by the square root of 2?

Answer 5

Are you using trigonometry or geometry?

Answer 6

geometry

Answer 7

Yes.