trigonometry

Question: If $\tan \theta -\cot \theta =a$ and $\sin \theta +\cos \theta =b,$ then ${{({{b}^{2}}-1)}^{2}}({{a}^{2}}+4)$ is equal to

1) $2$

2) $– 4$

3) $\pm 4$

4) $4$

Solution:

Explanation: No Solution

Fundamental trigonometrical ratios and functions Trigonometrical ratio of allied angles

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