as we know that (sin(x))^2 + (cos(x))^2=1(adsbygoogle = window.adsbygoogle || []).push({});

how about (sin(3x))^2 + (cos(3x))^2 and 5sin(3x)^2 + 6cos(3x)^2??

how can we solve these problems??

thanx

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# Solving trigonometric equations

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