Sin(pie-theta)=opposite/hypotenuse which is equal to opposite only . How ?

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Solution

Dear student whether its pi or pi- theta or theta , wheatever it may be , its an angle and sine of any angle is equal to the ratio of the length of side opposite to the angle (pi-theta here) to the hypotenuse.
Sine is opp / hypotenuse
Sin (pi-theta) = cos theta
But Its opp / hypotenuse for the angle pi- theta and its adjacent/ hypotenuse for the angle theta
pi- theta and theta are different values of angles

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