Question #f282e

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Question #f282e

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Answer 1 · 2016-10-22T14:14:30

Before using these answers, find out what the question means by 'exact value'. Does it mean the whole decimal from the calculator or is it some other meaning?

Explanation:

$sin (θ) = \frac{12}{13}$ $sin(theta) = 12/13$

$θ = {sin}^{- 1} (\frac{12}{13}) = {67.38}^{o}$ $theta=sin^-1(12/13)=67.38^"o"$

$cot (θ) = \frac{1}{tan (θ)} = \frac{1}{tan (67.38)} = 0.41666943299$ $cot(theta)=1/(tan(theta))=1/tan(67.38)=0.41666943299$

$cos (2 θ) = cos (2 (67.38)) = cos (134.74) = - 0.70$ $cos(2theta)=cos(2(67.38))=cos(134.74)=-0.70$

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