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bluepiratekid bluepiratekid
  • 25-07-2016
  • Mathematics
Answered

If cot x = .42 and sin x = .92, what is cos x?

Verified Answer :

konrad509
konrad509 konrad509
  • 25-07-2016

\(\cot x=\dfrac{\cos x}{\sin x}\\ \cos x=\cot x \sin x\\ \cos x=0.42\cdot0.92=0.3864\)

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dalendrk
dalendrk dalendrk
  • 25-07-2016

\(\cot\alpha=\dfrac{\cos\alpha}{\sin\alpha}\\\\\cot x=0.42;\ \sin x=0.92;\ \cos x=?\\\\subtitute\\\\\dfrac{\cos x}{0.92}=0.42\ \ \ |multiply\ both\ sides\ by\ 0.92\\\\\boxed{\cos x=0.3864\approx0.39}\)

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