Question
Verify that the following equations are identities.$$\frac{1-\cot x}{1+\cot x}=\frac{\sin x-\cos x}{\sin x+\cos x}$$
Step 1
The cotangent of x is the reciprocal of the tangent of x, which is cosine of x divided by sine of x. So, we have: $$\frac{1-\cot x}{1+\cot x}=\frac{1-\frac{\cos x}{\sin x}}{1+\frac{\cos x}{\sin x}}$$ Show more…
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