If cot θ=78,evaluate: (i) (1+sin θ)(1−sin θ)(1+cos θ)(1−cos θ

1.	If cot θ=78,evaluate: (i) (1+sin θ)(1−sin θ)(1+cos θ)(1−cos θ) (ii) cot2 θ
Answer» If cot $θ = \frac{7}{8}$ ,evaluate: (i) $\frac{(1 + s i n θ) (1 - s i n θ)}{(1 + c o s θ) (1 - c o s θ)}$ (ii) $c o t^{2} θ$

If cot θ=78,evaluate: (i) (1+sin θ)(1−sin θ)(1+cos θ)(1−cos θ) (ii) cot2 θ

Answer»

If cot $θ = \frac{7}{8}$ ,evaluate:

(i) $\frac{(1 + s i n θ) (1 - s i n θ)}{(1 + c o s θ) (1 - c o s θ)}$

(ii) $c o t^{2} θ$

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If cot θ=78,evaluate: (i) (1+sin θ)(1−sin θ)(1+cos θ)(1−cos θ) (ii) cot2 θ

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