is equal to:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e 2secx
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Understanding Tricks |
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Application
= cos2x + (1 + sinx)2/ cosx(1 + sinx) = (cos2x + sin2x + 1 + 2sinx)/cosx(1 + sinx) = (2 + 2sinx)/cosx(1 + sinx) = 2(1 + sinx)/cosx(1 + sinx) = 2/cosx |
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Hence 2secx |