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If pi ltthetalt(3pi)/2 the expression ...

If `pi ltthetalt(3pi)/2` the expression
`sqrt(4sin^(4)theta+sin^(2)2theta)+4cos^(2)(pi/4-theta/2)` is equal to

A

2

B

`2+4 sintheta`

C

`2-4 sintheta`

D

0

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The correct Answer is:
A
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AAKASH SERIES-MULTIPLE & SUBMULTIPLE ANGLES-EXERCISE-II
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  3. If pi ltthetalt(3pi)/2 the expression sqrt(4sin^(4)theta+sin^(2)2the...

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  4. If (x^(2)+1)/(2x)=cos theta then (x^(6)+1)/(2x^(3))=

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  7. Find the value of (sqrt(1+sin 2A)+sqrt(1-sin 2 A))/(sqrt(1 + sin 2A)-s...

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  9. If "cosec" theta = (p+q)/(p-q) " then " cot((pi)/4+( theta )/(2))=

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  10. If (tan3A)/(tanA)=arArr (sin3A)/(sinA)=

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  11. tan x+ tan(x+(pi)/(3))+ tan(x+(2pi)/(3))=3impliestan 3 x=

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  12. If 0lttheta ltpi/2,sin2theta=cos3theta then sintheta=

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  13. If cos x= tan y , coty= tan z , cot z= tan x then sin x=

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  14. (cos^(3)21^(@)+cos^(3)39^(@))/(cos21^(@)+cos39^(@))=

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  15. If cos alpha = (3)/(5) , cos beta =(5)/(13) , "then " cos^(2) ((alpha...

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  16. If cosA+cosB+cosC=0=sinA+sinB+sinC then cos^(2)((A-B)/2)=

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  17. If sin(pi cos theta)=cos(pi sin theta) then sin2theta=

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  18. 2 sin^(2) beta + 4 cos( alpha+ beta) sin alpha sin beta + cos ( 2 alph...

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  19. If A and B are acute angles satisfying 3sin^(2)A+2sin^(2)B=1 and 3 sin...

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  20. If cos (theta - alpha) , cos theta , cos (theta + alpha ) are in H.P....

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