English, asked by leoHarshit3942, 1 year ago

Prove that cot42° cot45° cot23° cot48° cot67°=1

Answers

Answered by priya2821

0

Answer:

Proved

Explanation:

=Cot42° cot45° cot(90-67°) cot(90-42°) cot67°

=cot 42° cot45° tan67° tan42° cot67°

=cot42°. cot45°. 1/cot67°. 1/cot42°.cot67°

[both cot42° and cot 67° gets canceled]

=1*cot45°*1*1*1

=1 (according to degrees cot45° =1)

Hence proved

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