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OpenStudy (anonymous):
sin(x)^2+4sin(x)-1=0
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OpenStudy (anonymous):
what are you trying to calculate?
OpenStudy (anonymous):
4 = cot(x)cos(x)
OpenStudy (anonymous):
we have to fiind the sin of x and then the related angles using a calculator
OpenStudy (anonymous):
Usually we have to factor or use quadratic formula to find sin(x)
OpenStudy (raden):
let t=sin(x), it can be t^2+4t-1=0, can't be factor it so, use quadratic formula : |dw:1350011330041:dw|
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