Question

How do you solve `sintheta=0.8` for `90<theta<180`?

Answer 1

`126.87^0`

Explanation:

Sin `theta`=.8 gives the value of the reference angle `theta` as `53.13^o`. The required angle between `90^0` and `180^o` would be 180-53.13 = `126.87^0`