Question

If cos A + sec A = 4, find the value of cos2A + sec2A.
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Answer 1

ANSWER:

correct answer is 8.

Step-by-step explanation:

given that,

cos A + sec A= 4

solution:-

= cos2A + sec2A

= 2( cos A + sec A)

= 2( 4)

= 8.

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Answer 2

Answer:

The correct answer is 8.....................