Yefim S. answered • 12/14/20
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sec(π/2 - x) = 1/cos(π/2 - x) = 1/(cosπ/2cosx + sinπ/2sinx) = 1/sinx = cscx
Nico W.
asked • 12/14/20Simplify sec ( (π/ 2) − x ) to a single trig function using the sum or difference of angles identity.
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