If $\theta$ is in the third quadrant, then $\sqrt{4 \sin ^4 \theta+\sin ^2 2 \theta}+4 \cos…

If $\theta$ is in the third quadrant, then $\sqrt{4 \sin ^4 \theta+\sin ^2 2 \theta}+4 \cos ^2\left(\frac{\pi}{4}-\frac{\theta}{2}\right)=$
  1. $1+2 \sin \theta$
  2. 2
  3. 1
  4. $2+4 \sin \theta$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2018 (24 Apr Shift 2)

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