Question

How do you solve `sinx=0.63` and find all solutions in the interval `[0,2pi)`?

Answer 1

`39^@05; 140^@95`

Explanation:

Use calculator:
sin x = 0.63 --> arc `x = 39^@05`
Unit circle gives another arc x that has the same sin value:
`x = 180 - 39.05 = 140^@95`
Answers for (0, 360):
`39^@05, 140^@95`