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OpenStudy (anonymous):
The expression (secx + tanx)2 is the same as _____. A. 1 + 2tan2x + 2secx tanx B. sec2x + 2cscx + tan2x C. sec2x + tan2x D. 1 + 2cscx
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OpenStudy (anonymous):
expand the function inside the parantheses i.e. secx + tanx = (1/cosx) + (sinx/cos x)
OpenStudy (anonymous):
so it becomes ((1+sinx)/cosx)^2
OpenStudy (anonymous):
|dw:1381811574699:dw|
OpenStudy (anonymous):
thanks
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