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If sin theta(1)+sin theta(2)+sin theta(3...

If `sin theta_(1)+sin theta_(2)+sin theta_(3)=3` then `cos theta_(1)+cos theta_(2)+cos theta_(3)=`

A

0

B

1

C

2

D

3

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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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  13. sin 47^(circ)+sin 61^(circ)-sin 11^(circ)-sin 25^(circ)=

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  14. sqrt(3) cot 20^(circ)-4 cos 20^(circ)=

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  15. For A=133^(circ), 2 cos (A/2)=

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