Question

If 3 cos θ = 2 then what is the value of θ ?​

Answer 1

Answer:

$3 \cos \: \alpha = 2 \\ \cos( \alpha ) = \frac{2}{3} \\ \sin( \alpha ) = \frac{ \sqrt{5} }{3} \\ \tan( \alpha ) = \frac{ \sqrt{5} }{2} \\ \cot( \alpha ) = \frac{2}{ \sqrt{5} } \\ \sec( \alpha ) = \frac{3}{2} \\ \csc( \alpha ) = \frac{3}{ \sqrt{5} }$

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Answer 2

• 3 cos$theta$ =2
• cos theta=2/3
• arcos(cos theta)=arcos(2/3)

theta =arcos(2/3)  ,48.2° , 0.841 radian

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