Mathematics, 15.11.2019 04:31 mervesena01
Find cos \theta θ if \sin\theta=-\frac{7}{15} sin θ = − 7 15 and falls in quadrant 4
Answers: 1
![\bf \pm\sqrt{15^2-(-7)^2}=a\implies \pm\sqrt{176}=a\implies \stackrel{\textit{IV Quadrant}}{+\sqrt{176}=a} \\\\[-0.35em] ~\dotfill\\\\ ~\hfill cos(\theta )=\cfrac{\stackrel{adjacent}{\sqrt{176}}}{\stackrel{hypotenuse}{15}}~\hfill](/tpl/images/0375/3760/e9b68.png)
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Find cos \theta θ if \sin\theta=-\frac{7}{15} sin θ = − 7 15 and falls in quadrant 4...
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