Precalculus Archive: Questions from July 27, 2023
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For the given parametric equations, find the points \( (x, y) \) corresponding to the parameter values \( t=-2,-1,0,1,2 \). \[ \begin{array}{ll} & x=3 t^{2}+3 t, \quad y=2^{t+1} \\ t=-2 & (x, y)=( \\2 answers -
Verify the identity. 2 tan y 1+ tan y = sin 2y
Verify the identity. \[ \frac{2 \tan y}{1+\tan ^{2} y}=\sin 2 y \] (a) Verify the identity. \[ \frac{2 \tan y}{1+\tan ^{2} y}=\sin 2 y \] (b) Find the exact value of \( \sin 38^{\circ} \cos 22^{\ci2 answers -
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