Write Equation: First, let's write down the given equation.2sinxcosx=sinx
Subtract and Rearrange: Now, we subtract sinx from both sides to move all terms involving x to one side of the equation.2sinxcosx−sinx=0
Factor Out: Factor out sinx from the left side of the equation.sinx(2cosx−1)=0
Set Equal to Zero: Set each factor equal to zero to find the solutions for x.sinx=0 and 2cosx−1=0
Solve sinx=0: Solve the first equation sinx=0. The solutions for x are the angles where the sine function equals zero. x=nπ, where n is an integer.
Solve cosx=21: Solve the second equation 2cosx−1=0.Add 1 to both sides and then divide by 2.cosx=21
Solve cosx=21: Solve the second equation 2cosx−1=0. Add 1 to both sides and then divide by 2. cosx=21Find the values of x where the cosine function equals 21. x=3π+2nπ or x=35π+2nπ, where n is an integer.
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