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lina2011 [118]
3 years ago
6

See attached photo. Please Help ASAP and Explain

Mathematics
1 answer:
nignag [31]3 years ago
3 0
(sinx)^2 = 1 when cosx is 0 at pi/2 and 3pi/2
cosx = 1 when sinx is 0 at 0

therefore, A
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