4 years ago

The control group in an experiment is the group that did not have a variable changed.

Mathematics

1 answer:

Amiraneli [1.4K]4 years ago

4 0

The answer is
true.

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We know $\sin^2x + \cos^2x = 1 \Rightarrow \sin^2x=1-\cos^2x$ so we can replace the sin²x in the LHS expression as follows

$\frac{\sin^2x}{\cos x} = \frac{1-\cos^2x}{\cos x}$ which is the RHS.

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3 years ago

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3 years ago

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ruslelena [56]

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