If cos theta = 2 tan theta, what is the numerical value of cos square theta? a)-2-2sqrt2 b)-2+2sqrt2 c)-1-sqrt3 d)none. please explain

Asked by sumandeesinghrana | 14th Oct, 2010, 08:06: PM

Expert Answer:

Answered by  | 15th Oct, 2010, 10:50: AM

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