SOLUTION: 4sin^2x-(4/cscx)+cosx secx=0

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Question 386440: 4sin^2x-(4/cscx)+cosx secx=0
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
4%2Asin%5E2%28x%29-%284%2Fcsc%28x%29%29%2Bcos%28x%29%2Asec%28x%29=0
4%2Asin%5E2%28x%29-4%2Asin%28x%29%2Bcos%28x%29%2A%281%2Fcos%28x%29%29=0
4%2Asin%5E2%28x%29-4%2Asin%28x%29%2B1=0
Let u=sin%28x%29,
4u%5E2-4u%2B1=0
%282u-1%29%5E2=0
One solution:
2u-1=0
2u=1
u=1%2F2
sin%28x%29=1%2F2
x=30degrees and x=150degrees