Question

Find x.
the image of an unlabeled triangle with 45 degrees in the upper left corner and a box in the upper right corner; the vertical side on the right of the triangle is labeled 4 and the slanted side from the upper left to the lower right is labeled x
A. 4
B. 4 times the square root of 2
C. 8
D. 4 times the square root of 3

Answer 1

sin 45=1/root2
B