If you can you show step-by-step so i know how to better understand. you : ) will award brainliest

First method: isosceles triangle

This is a right triangle, so one angle is 90°. The other angle is 45. So, the last angle must be

So, the triangle is isosceles, and the legs have the same length, i.e. x=4.

Then, we can find y using either the pythagorean theorem, or the fact that a right isosceles triangle is half a square, and so y is actually the diagonal of the square:

First method: trigonometry

You can use the sine law: it states that the ratio between a side and the sine of its opposite angle is constant. In particular, with right triangles, we have

And similarly

and trivially deduce again that x=y=4.

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

answer: 177/8

step-by-step explanation: