Cot12°*cot38°*cot45°*cot52°*cot78°?
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By changing the given question with the help of trigonometry ratios of complementary angles.
=Cot(90-12)*cot(90-38)*cot45*cot52*cot78
=tan78*tan52*1*cot52*cot78
=tan78*1/tan78*tan52*1/tan52*1
=1
By changing the given question with the help of trigonometry ratios of complementary angles.
=Cot(90-12)*cot(90-38)*cot45*cot52*cot78
=tan78*tan52*1*cot52*cot78
=tan78*1/tan78*tan52*1/tan52*1
=1
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