Precalculus Archive: Questions from April 08, 2023
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Exprese como función trigonométrica de un ángulo (a) \( \operatorname{sen}\left(54^{\circ}\right) \operatorname{sen}\left(12^{\circ}\right)+\cos \left(54^{\circ}\right) \cos \left(12^{\circ}\right)2 answers -
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Solve for \( x \) and \( y \). \[ \left[\begin{array}{cc} -3 & 3 \\ -1 & -2 \end{array}\right]\left[\begin{array}{cc} -4 & x \\ 6 & y \end{array}\right]=\left[\begin{array}{cc} 30 & -21 \\ -8 & -1 \en2 answers -
1. Halle los valores exactos usando las fórmulas de suma o resta (a) \( \tan \left(255^{\circ}\right) \) (b) \( \operatorname{sen}\left(\frac{17 \pi}{12}\right) \) (c) \( \cos \left(165^{\circ}\right2 answers -
1. Resolver el Tridngulo complejo: 2. Resolver el sibuiente trideroulo: 3). DADOS: \( \cos \theta=-2 / 3 ; \operatorname{TAN} \theta=-\frac{\sqrt{5}}{2} \) Hallae las 4 funciones Trigonoretricas desta2 answers -
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6. Halle el valor exacto de \[ \tan \left(\operatorname{sen}^{-1}\left(-\frac{7}{25}\right)-\cos ^{-1}\left(\frac{3}{5}\right)\right) \]2 answers