Mathematics · Trigonometry

The solution of the equation cos 2 θ + sin θ + 1 = 0 lies between:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1(- π 4 , π 4 )
2( π 4 , 3π 4 )
3( 5π 4 , 7π 4 )✓
4( 3π 4 , 5π 4 )

Correct answer

( 5π 4 , 7π 4 )

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The solution of the equation cos 2 θ + sin θ + 1 = 0 lies between:

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The solution of the equation cos 2 θ + sin θ + 1 = 0 lies between: