In a right triangle ABC, right-angled at B,
if tan A = 1, then verify that
2 sin A cos A = 1.
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Answer:
tan A =1
tan A=tan 45°
2sinAcosA= 2X sin 45°X cos 45°=2X1/√2X1/√2=2X1/2=1.
therefore, verified.
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