- #1
FlopperJr
- 29
- 0
Homework Statement
Solve the equation 5sin2x-3=0, given values of x in the interval -180≤x≤180 correct to 1 decimal place.
Homework Equations
for sin: take inverse
180-θ
±360
The Attempt at a Solution
I rearranged the equation to
sin2=3/5
but I am not quite sure what to do since sine is squared. I think it won't affect answer.
Then I did the inverse which was 36.9
subtrated 180 from inverse; 180- 36.9 = 143.1
Then I did 360±36.9 and 360±143.1
where both of these didn't fit in the interval.
Is this correct: x=36.9° and 143.1°