Question

8.sin10°.sin50°.sin70°=1​

Answer 1

Answer

1/8

Step-by-step explanation:

LHS=sin10°sin50°sin70°.

=sin10° cos(90∘−50°)cos(90∘−70°).

=2sin10∘cos10∘cos40∘cos20∘/2cos10

=2sin20∘cos20∘cos40/4 cos10

=2sin40∘cos40/8cos10∘.

=sin80/8cos10∘

=cos10/8cos10

=1/8.

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Answer 2

here is your answer

Step-by-step explanation:

the answer is 1/8

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