Determine All Solutions of the Equation in Radians $\cos 2 \theta = \frac { 5 } { 6 }$

question 226

Multiple Choice

Determine all solutions of the equation in radians.
- $\cos 2 \theta = \frac { 5 } { 6 }$ and $\theta$ terminates in quadrant $\mathrm { I } \quad$ Find $\sin \theta$ .

• A) \(\sin \theta = \frac { \sqrt { 3 } } { 6 }\)
• B) \(\sin \theta = 0\)
• C) \(\sin \theta = 2 \sqrt { 3 }\)
• D) \(\sin \theta = - \frac { \sqrt { 3 } } { 6 }\)

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