Question

find the value of e

Answer 1

A. 17.2
B. 12.7
C. 19.4
D. 14.9

Answer 2

sin 61 / e = sin 45 / 15.7

Answer 3

I can see that you haven't learnt or you don't understand the sine/cos and other rules that apply to non-right angled triangles. You need to learn them first.

Answer 4

45+61+angle R=180
angle R=74
and side e = 15.7 cos 74 = 15.7 *.87=14.134