a, b and c are angles of a triangle

a, b and c are angles of a triangle

Please Help. Establish Identity: sin(x+y)/tan(x)+tan(y)= cos(x)cos(y)

Given that u = Pi - x , prove that the integral from 0 to Pi of x*f(Sin(x)) dx is equal to (Pi/2) * the integral from 0 to Pi of f(Sin(x)) dx I took the derivative of U and got du =...

2cos2θ+sinθ=1

find the solutions of the equation in the interval [0, 2pi)

find solutions with trigonometric identities

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