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If sqrt(1-sinA)= "sin" A/2-"cos" A/2, th...

If `sqrt(1-sinA)= "sin" A/2-"cos" A/2`, then `A/2 - pi/4` could lie in quadrant :

A

I or II

B

II or III

C

I or III

D

I or IV

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The correct Answer is:
A
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PATHFINDER-BASIC MATHEMATICS-QUESTION BANK
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  4. Prove that tan 1^@ tan 2^@ tan 3^@........ tan 88^@tan89^@=1

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  5. Prove that sin10^@+sin20^@+sin30^@+.........+sin360^@=0

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  8. If cos theta+ cos^2 theta=1, prove that sin^12 theta+3sin^10 theta+3s...

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  11. Evaluate : lim(xrarr0) (sin(1+x)-sin(1-x))/x

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  12. Evaluate : lim(xrarr0) (tanx-sinx)/x^3

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  15. Differentiate the following functions w.r.t.'x' : log (sin (logx))

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  16. Differentiate the following functions w.r.t.'x' : e^(3sqrtax)

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  20. If sin y = x sin(a+y), than prove that dy/dx=(sin^2(a+y))/sina

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