Question

Please help me to solve this hard question.I need your help right now ​

Answer 1

θ = 110.61°

Explanation:

It's not that hard :)

Let a = θ/3

Then sin a = 3/5 = 0.6

a = sin⁻¹(a) = 36.87°

=> θ/3 = 36.87°

θ = 3 x 36.87

θ = 110.61°