If x = α and x = β satisfy the equations cos2 x + a cos x + b = 0 – McqOptions

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1.	If x = α and x = β satisfy the equations cos2 x + a cos x + b = 0, sin2 x + p sin x + q = 0 both, then the relation among a, b, p and q will be:
A.	a2 + b2 = p2 + q2
B.	a + p = b + q
C.	2(b + q) = a2 + p2 - 2
D.	b + q = a2 + p2 - q2
Answer» D. b + q = a2 + p2 - q2

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