if sec theta x sin theta=1 then cos theta value
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as sin theta * sec theta = sin theta / cos theta = tan theta = 1
ans tan 45°= 1 therefore theta = 45°
therefore cos theta = cos 45° = 1/√2
ans tan 45°= 1 therefore theta = 45°
therefore cos theta = cos 45° = 1/√2
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Sec x * sin x =1 Sin x/Cosx =1 Sin x = Cos x Sin x = Sin ( pi/2-x) x=pi/2-x 2x=pi/2 x=pi/4 Cos x = Cos pi/4 =1/(sq.root 2)
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