Math, asked by mohitkulhari029, 1 year ago

the value of tan 10degree tan 15 degree tan 75 degree tan 80 degree is​

Answers

Answered by Sreesha
2

Answer:

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Step-by-step explanation:

tan10 tan15 tan75 tan80 = tan10 tan15 cot15 cot10            [tan(90-x) = cotx]

                                         = tan10 cot10 tan15 cot15            [ tanx cotx = 1]

                                         = 1

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