#2**0 **

sin (x) = -0.89 use the sine inverse

arcsin(-0.89) = x = -1.0973 + 2pi ≈ 5.1858 and x = pi + 1.0973 ≈ 4.2389

So

A ≈ 4.2389 rads and B ≈ 5.1858 rads

CPhill
Feb 19, 2017

#3**+5 **

I doubt very much that felrose has any idea what you have done Chris.

I doubt if he/she is even interested.

He/she is not using us to learn he is just using us to do his/her homework.

Melody
Feb 19, 2017