Principle Sine Function:
If we restrict the domain of y = sin x to the interval [-π/2 , π/2] , then the restricted function y = sin x , -π/2 ≤ x ≤ π/2 is called the principle sine function.
If we restrict the domain of y = sin x to the interval [-π/2 , π/2] , then the restricted function y = sin x , -π/2 ≤ x ≤ π/2 is called the principle sine function.
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