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bekas [8.4K]
3 years ago
15

Which expression is equivalent to (1 – sin2 x)(sec x)?

Mathematics
1 answer:
jonny [76]3 years ago
7 0
Sin(2x) = 2sin(x)cos(x) so 

sec(x)sin(2x) = 2sec(x)sin(x)cos(x) = 2sin(x) 

because sec(x)cos(x) = 1. 

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