If 117 Cos2 A + 129 Sin2 A = 120 and 170 Cos2 B + 158 Sin2 B = 16 – McqOptions

MCQOPTIONS

1.	If 117 Cos2 A + 129 Sin2 A = 120 and 170 Cos2 B + 158 Sin2 B = 161, then the value of Cosec2 A Sec2 B is:
A.	16
B.	9
C.	1
D.	4
Answer» B. 9

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