Precalculus Archive: Questions from July 19, 2023
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\( \sin \alpha= \) \( \sin \beta= \) \( \cos \alpha= \) \( \cos \beta= \) \( \tan \alpha= \) \( \tan \beta= \)2 answers -
Establish the identity. \[ \frac{\cos (\alpha+\beta)}{\cos \alpha \sin \beta}=\cot \beta-\tan \alpha \] A. \[ \frac{\cos (\alpha+\beta)}{\cos \alpha \sin \beta}=\frac{\cos \alpha \cos \beta-\sin \alph2 answers -
Establish the identity. \[ 2 \sin ^{3} \theta \cos \theta+2 \sin \theta \cos ^{3} \theta=\sin (2 \theta) \] Choose the sequence of steps below that verifies the identity. A. \( 2 \sin ^{3} \theta \cos2 answers -
Solve the triangle. \[ \begin{array}{l} b=7.49, \alpha=20.7^{\circ}, \gamma=109.3^{\circ} \\ b=5.49, \alpha=109.3^{\circ}, \gamma=20.7^{\circ} \\ b=6.49, \alpha=109.3^{\circ}, \gamma=20.7^{\circ} \\ b2 answers