Grade 12th passTrigonometry
the value of sin(p+q) sin(p-q)cosec²q is equal to (a) -1. (b).0 (c) sin q. (d) none of these
1 Answer
Arun
Approved Tutor Answer8 Years agosin(p + q) * sin(p –q) = sin2p –sin2q
now from the queston
[ sin2p –sin2q ] * cosec2q = sin2 p /sin2q –1 (answer)
hence option D is correct.
please check the question before disapproving the answer.
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