Question

\[if~~ sin(2\theta) = 0.5798, ~~then \theta = 17.71~~or~~\theta = 90- 17.71 = 72.29\]
I don't understand. Please, explain me

Answer 1

@e.mccormick

Answer 2

the first value, I am ok, but how they get the second one?

Answer 3

You mean why there are two answers?

Answer 4

yes

Answer 5

the interval is [0,90]

Answer 6

Hmm.... yah, th 90- seems odd. I thought that would be 180- because that has the same sine value.

Answer 7

AH! It is for the 2 posible values of \(2\theta\).