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If any triangle A B C sin ^(2) A+sin ^(2...

If any triangle `A B C sin ^(2) A+sin ^(2) B-sin ^(2) C=`

A

`2 sin A . sin B . sin C`

B

`2 cos A . cos B . cos C`

C

`2 cos A . sin B . sin C`

D

`2 sin A . sin B . cos C`

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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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