How to find the sign of sin2 sin3 sin4 ?

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asked Nov 27, 2016 in Mathematics by Rahul Roy (7,895 points) 33 120 326

1 Answer

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answered Nov 30, 2016 by Abhishek Kumar (14,593 points) 5 9 37

Use the trigonometric identity formula to find the sign of the above identity.

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http://www.sarthaks.in/1057/what-will-be-the-sign-of-sin1-sin2-sin3-positive-or-negative-please-explain

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