Is sin^2(3x)+cos^2(3x)=1 ?

The answer to whether sin^2(3x)+cos^2(3x)=1 is True

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prove sin^2(3x)+cos^2(3x)=1

prove

sin^{2} (3 x) + cos^{2} (3 x) = 1

True

Solution steps

sin^{2} (3 x) + cos^{2} (3 x) = 1

Use the Pythagorean identity:

cos^{2} (x) + sin^{2} (x) = 1

\Rightarrow True

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