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Complete the Sentence So the Result Is an Identity $ـــــــ+ \tan ^ { 2 } x = \sec ^ { 2 } x$

Question 227

Multiple Choice

Complete the sentence so the result is an identity. Let x be any real number.
- $ـــــــ+ \tan ^ { 2 } x = \sec ^ { 2 } x$

A) $\sin ^ { 2 } x$
B) $\cos ^ { 2 } x$
C) 1
D) $- 1$

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