Math, asked by soumyadeepbhowmick9, 9 months ago

tan15 degree×tan75degree×tan 105 degree×tan 15 degree

Answers

Answered by dev22garg02

0

Answer:

-1

Step-by-step explanation:

tan15 degrees*tan75 degrees*tan105 degrees*tan15 degrees

tan 75degrees can be written as cot15 degrees.

tan105degrees can be written as -cot15degrees

tan(A) *cot(A)=1

Therefore,

tan15 degrees*tan75 degrees*tan105 degrees*tan15 degrees= -1

=-1

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