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If pi lt alpha lt (3pi)/(2), then find t...

If `pi lt alpha lt (3pi)/(2)`, then find the value of expression `sqrt(4 sin^(4) alpha+sin^(2) 2 alpha) + 4 cos^(2)(pi/4 - alpha/2)`.

A

`2+4 sin alpha`

B

`2-4 cos alpha`

C

2

D

`2-4 sin alpha`

Text Solution

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The correct Answer is:
C
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VIKAS GUPTA (BLACK BOOK) ENGLISH-COMPOUND ANGLES-Exercise-5 : Subjective Type Problems
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