Evaluate the following: tan 7° tan 23° tan 60° tan 67° tan 83°

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asked Feb 16, 2018 in Mathematics by sforrest072 (157,439 points) 61 411 949
Evaluate the following:

tan 7° tan 23° tan 60° tan 67° tan 83°

1 Answer

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answered Feb 16, 2018 by mdsamim (213,225 points) 5 10 15
selected Feb 16, 2018 by sforrest072
 
Best answer

tan 7° tan 23° tan 60° tan (90° - 23) tan (90° - 7°)
⇒ tan 7° tan 23° tan 60° cot 23° tan 60°
1 ∙ 1 ∙ 3 = 3

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