Solved

Verify the Identity $\frac { 1 + \sec ^ { 2 } x } { 1 + \tan ^ { 2 } x } = 1 + \cos ^ { 2 } x$

Question 14

Essay

Verify the identity. $\frac { 1 + \sec ^ { 2 } x } { 1 + \tan ^ { 2 } x } = 1 + \cos ^ { 2 } x$

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