Question

Find x.

can someone work it out for me so i can try and figure out how to do problems like this on my own? please and thank you

Answer 1

x = 7/2

Explanation:

Since this is a right triangle, we can use trig functions

cos theta = adj side / hypotenuse

cos 45 = x / 7 sqrt(2) /2

7 sqrt(2)/2 cos 45 = x

7 sqrt(2)/2 (1/ sqrt(2))= x

7/2 = x