Question

Can somone help me solve this problem?

Answer 1

I tried this (assuming you need the angle in `U`):

Explanation:

From trigonometry we know that:
`7.5=19.5sin(Û)`
rearranging:
`sin(Û)=7.5/19.5`
`sin(Û)=0.38`
and finally:
`Û=sin^(-1)(0.38)`