Question

ran1 tan2 tan3 tan89=1​

Answer 1

Answer:

tan1 tan2......tan45.....tan88 tan89

= tan1tan2....tan45...tan(90 - 2)tan(90 - 1)                  tan (90 - x) = cot x

= tan1 tan2....tan45....cot2 cot1 

 

= (tan1 cot1) (tan2 cot2) .......tan 45

= 144 × 1                                                                tanx cotx = 1

= 1 

Answer 2

Answer:

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