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How you are satisfying the equation by taking first and second quadrant angles please explain

How you are satisfying the equation by taking first and second quadrant angles please explain

Question Image
Grade:12th pass

1 Answers

Soumendu Majumdar
159 Points
3 years ago
Dear Student,
Referring to the previous answer,
cos^2 p\geq 4cospsinp-4sinp
for 1st quadrant, take 30^{\circ}
L.H.S= 3/4
R.H.S=\sqrt{3} - 2
so the equation is satisfied.
For 2nd quadrant take 120^{\circ}
L.H.S= 1/4
R.H.S= -3\sqrt3
So the equation is satisfied.
Similarly, you can take 45^{\circ},60^{\circ},150^{\circ},etc. the equation will be satisfied.
Hope it helps!

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