Question

5) \( 4 \cos ^{2} x+4 \cos x-3=0 \) 6) \( 4 \cos ^{2} x-\cos x-3=0 \) 7) \( 4 \sin ^{2} x+4 \sin x-3=0 \) 8) \( \operatorname{ctg}^{2} x+\operatorname{ctg} x-2=0 \) 9) \( \sin ^{2} x-3 \sin x+2=0 \)

          5) \( 4 \cos ^{2} x+4 \cos x-3=0 \)
6) \( 4 \cos ^{2} x-\cos x-3=0 \)
7) \( 4 \sin ^{2} x+4 \sin x-3=0 \)
8) \( \operatorname{ctg}^{2} x+\operatorname{ctg} x-2=0 \)
9) \( \sin ^{2} x-3 \sin x+2=0 \)

5) 4 cos ^2 x+4 cos x-3=0
6) 4 cos ^2 x-cos x-3=0
7) 4 sin ^2 x+4 sin x-3=0
8) ctg^2 x+ctg x-2=0
9) sin ^2 x-3 sin x+2=0

Added by Nazariy F.

Mathematics for IIT JEE Main and Advanced Differential Calculus Algebra Trigonometry

Sanjiva Dayal IIT Kanpur 1st Edition

Chapter 12

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Solved by Expert Breanna Ollech

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Question

5) \( 4 \cos ^{2} x+4 \cos x-3=0 \) 6) \( 4 \cos ^{2} x-\cos x-3=0 \) 7) \( 4 \sin ^{2} x+4 \sin x-3=0 \) 8) \( \operatorname{ctg}^{2} x+\operatorname{ctg} x-2=0 \) 9) \( \sin ^{2} x-3 \sin x+2=0 \)

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