What is the value of (cos9A+cos5A/sin9A-sin5A)?
(a) cot 2A
(b) cot A.
(c) tan 2A
(d) tan A
Sol:
What is the value of (cos9A+cos5A/sin9A-sin5A)?
(a) cot 2A
(b) cot A.
(c) tan 2A
(d) tan A
Sol:
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