The value of the expression 1-sin2y-1-cos y-1-cos y-sin y-sin y-1-cos y

1 1 cos^2y/1+cosy+(1 cos^2y) sin^2y/siny(1+cosy)=1 (1 cosy)+0=cosy ...

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Basic Trigonometric Identities

The value of ...

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The value of the expression $1 - \frac{s i n^{2} y}{1 + c o s y} + \frac{1 + c o s y}{s i n y} - \frac{s i n y}{1 - c o s y}$

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sin y

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cos y

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The value of the expression $1 - \frac{s i n^{2} y}{1 + c o s y} + \frac{1 + c o s y}{s i n y} - \frac{s i n y}{1 - c o s y}$

\frac{{sin}^{3} y}{1 + cos y} + \frac{{cos}^{3} y}{1 - sin y}

1 - \frac{{sin}^{2} y}{1 + cos y} + \frac{1 + cos y}{sin y} - \frac{sin y}{1 - cos y} =

{cos}^{- 1} x + {cos}^{- 1} y = \frac{2 π}{7}

{sin}^{- 1} x + {sin}^{- 1} y =

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