Question

15. Prove that: tan 0 tan (0 + 60°) + tan 0 tan (0 - 60°) + tan (0 + 60°) tan (0 – 60°) = -3.
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Answer 1

Answer:

multiply LHS and RHS by 0(zero)

so, LHS=RHS

HENCE PROVED

you get your answer.

Step-by-step explanation:

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