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    Precalculus Graphical Numerical Algebraic
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    Exam 5: Analytic Trigonometry
  5. Question
    Prove the Identity\[- \tan ^ { 2 } x + \sec ^ { 2 } x = \sec ^ { 2 } x \cos ^ { 2 } x\]
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Prove the Identity −tan⁡2x+sec⁡2x=sec⁡2xcos⁡2x- \tan ^ { 2 } x + \sec ^ { 2 } x = \sec ^ { 2 } x \cos ^ { 2 } x−tan2x+sec2x=sec2xcos2x

Question 201

Question 201

Essay

Prove the identity.
- −tan⁡2x+sec⁡2x=sec⁡2xcos⁡2x- \tan ^ { 2 } x + \sec ^ { 2 } x = \sec ^ { 2 } x \cos ^ { 2 } x−tan2x+sec2x=sec2xcos2x

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