Math, asked by Meghanasambaru, 2 days ago

.Prove that tan15°.tan20°.tan70°.tan75°=1

Answers

Answered by amanchaurasia0012

1

Step-by-step explanation:

tan 15 means cot 75

and tan20 means cot 70

so

cot 75 × tan75 × cot 70 × tan 70 =1

as cot is inverse of tan

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