The value of sin(pi/18)sin(5pi/18)sin(7pi/18) is (1) 1/2 (2) 1/4 - Sarthaks eConnect | Largest Online Education Community
The value of sin^2(π/18) + sin^2(π/9) + sin^2(7π/18) + sin^2(4π/9) - Sarthaks eConnect | Largest Online Education Community
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