Question

☻Please help here☻:

Look at pic below↓:

Answer 1

always be two ... hint plot graph.

Answer 2

of sin(theta) = y

Answer 3

2 solutions.
theta = arcsin(0.4321)
theta = 25.6

sin is negative in quadrants 3 and 4, recall your CAST rule.
Therefore
theta1 = 180 + 25.6 = 205.6 degrees
theta2 = 360-25.6 = 334.4 degrees

Answer 4

@petewe, what is the reference angle for my question?

Answer 5

@petewe, thanks for helping btw:)