2 sin A cos A + (cos A + sin A) square - (2 cos A + sin A) square
From the following figure, find
If A, B and C are interior angles of a triangle ABC
If sin theta - cos theta = 0,
Prove the trigonometric identity
(cosec theta - sin theta) (sec theta - cos theta) = sin theta . cos theta
Express each of the following in terms of trignometric ratio of angles
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