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If tan(picos theta) = cot(pisin theta), ...

If `tan(picos theta) = cot(pisin theta)`, then `cos(theta - pi/4)` is :

A

`(1)/(sqrt(2))`

B

`(1)/(2 sqrt(2))`

C

`-(1)/(2 sqrt(2))`

D

`-(1)/(sqrt(2))`

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HIMALAYA PUBLICATION-MEASUREMENT OF ANGLES, TRIGONOMETRIC RATIOS AND RELATION BETWEEN SIDES AND ANGLES OF A TRIANGLE-QUESTION BANK
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