Prove the following trigonometric identities: (1+sin θ)2+(1−sin θ)

1.	Prove the following trigonometric identities: (1+sin θ)2+(1−sin θ)22 cos2θ=1+sin2θ1−sin2θ
Answer» Prove the following trigonometric identities: $\frac{(1 + s i n θ)^{2} + (1 - s i n θ)^{2}}{2 c o s^{2} θ} = \frac{1 + s i n^{2} θ}{1 - s i n^{2} θ}$

Prove the following trigonometric identities: (1+sin θ)2+(1−sin θ)22 cos2θ=1+sin2θ1−sin2θ

Answer»

Prove the following trigonometric identities:

$\frac{(1 + s i n θ)^{2} + (1 - s i n θ)^{2}}{2 c o s^{2} θ} = \frac{1 + s i n^{2} θ}{1 - s i n^{2} θ}$

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Prove the following trigonometric identities: (1+sin θ)2+(1−sin θ)22 cos2θ=1+sin2θ1−sin2θ

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