Precalculus Archive: Questions from April 06, 2023
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verify the following identities
\( \cot x-\tan x=\frac{2 \cos ^{2}(x)-1}{\operatorname{sen} x \cos x} \) \( 2 \csc ^{2} y=\frac{1}{1-\cos y}+\frac{1}{1+\cos y} \)2 answers -
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Find the exact value of...
Halla el valor exacto de \( \operatorname{sen}(\theta) \), dado que \( \cos (\theta)=\frac{8}{9} y \tan (\theta)2 answers -
this is a spanish course !!
5-5 | Asociaciones What are you (not) supposed to do when you are not feeling well? Follow the model. MODELO: No debo fumar cuando estoy congestionado(a). Debo descansar cuando estoy enfermo \( (a) \)2 answers -
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A person walks in a straight line 24 meters. Then took a 40° turn and walked an additional 45 meters. At what distance is the person from the starting point?
Una persona camina en linea recta 24 metros. Luego da un giro de \( 40^{\circ} \) y camina 45 metros adicionales. ¿A qué distancia se encuentra del punto de partida?2 answers -
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5. Verifique las siguientes identidades. (a) \( \tan \left(\frac{\pi}{4}+x\right)+\tan \left(\frac{\pi}{4}-x\right)=\frac{2}{\cos ^{2} x-\operatorname{sen}^{2} x} \) (b) \( (\operatorname{sen} \alpha-2 answers -
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 -
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Verify the identity. \[ \frac{1+\tan ^{2}(u)}{1-\tan ^{2}(u)}=\frac{1}{\cos ^{2}(u)-\sin ^{2}(u)} \] \[ \begin{array}{l} =\frac{1+\frac{\sin ^{2}(u)}{\cos ^{2}(u)}}{1-\frac{\sin ^{2}(u)}{\cos ^{2}(u)}2 answers -
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