Question

Prove that
Tan 1°.tan 2° .Tan 3° ........ Tan 89° =1

Answer 1

Answer:

hey bro the answer is super easy hope it help

Answer 2

we can write tan 1 (tan90-89) is equal to cot 89 same as tan 2 is equal to 2 cot 88 and so one. so now the sequence is-. cot89.cot88.cot87.....tan89 so cot 89 is cancelled with tan89. and cot88 is cancelled with tan88 and so on. at last we have only tan 45 which is equal to 1.