Hi, stuck on his question for about 15min and counting. I dont understand how they got the answer Simplify. 1) 1 - Cos^2x (answer is sin^2x) 2) 1 - Sin^2x (answer is cos^2x) -Thanks
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Originally Posted by MP3 Hi, stuck on his question for about 15min and counting. I dont understand how they got the answer Simplify. 1) 1 - Cos^2x (answer is sin^2x) 2) 1 - Sin^2x (answer is cos^2x) -Thanks Use the well-known identity $\displaystyle \cos^2x+\sin^2x=1$ That's all
Ohhh thank you, thank you very much
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