Math, asked by shubhamkotian70, 2 months ago

The value of tan 5°.tan 15°. tan 35°. tan 45º tan 55°. tan 65°. tan 75°. tan 85° is
a) 00
b) 0
c) 1
d) - 1.

Answers

Answered by bagkakali

7

Answer:

tan 5°.tan15°tan 25°.tan 35°.tan 45°tan 55°tan65°tan75° tan 85°

=tan5°tan15°tan 25°tan35°.1.tan(90-35)°.tan(90-25)°.tan(90-15)°.tan(90-5)°

=tan 5° tan 15°.tan25°.tan35°.cot 35°.cot25°.cot 15°.cot 5°

=1

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