SOLUTION: how do i solve this i need like a step by step breakdown
5 cos^2(theta)-4 sin(theta)-4 = 0
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Question 275801: how do i solve this i need like a step by step breakdown
5 cos^2(theta)-4 sin(theta)-4 = 0
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Remember
Therefore
So substitute
\ -\ 4\sin\Theta\ -\ 4\ =\ 0)
Simplify:
Let 
represent 
Factor the quadratic:
\left(x\ +\ 1\right)\ =\ 0)
Hence,
or
But since 
or
And finally, considering the interval 
:
\ \approx\ 0.2013)
or 
and
\ =\ \frac{3\pi}{2})
John
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