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[" If "sin theta=(-4)/(5)" and "theta" l...

[" If "sin theta=(-4)/(5)" and "theta" lies in third quadrant then the value of "cos(theta)/(2)" is "quad " se.If "tan theta=],[[" (A) "(1)/(5)," (B) "-(1)/(sqrt(10))," (C) "-(1)/(sqrt(5))," (D) "(1)/(sqrt(4))]]

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