Wednesday, July 17, 2013

a=sin(theta), express sec2(theta) as a function of a.

a=sin%28theta%29 
%0D%0Asec%282+%2Atheta%29=1%2Fcos%282%2Atheta%29=1%2F%281-2%2Asin%5E2%28theta%29%29%0D%0A 
therefore we can write 

sec%282%2Atheta%29=1%2F%281-2a%5E2%29
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