4xsecA=1+4x^2 prove that secA+tanA=2x or 1/2x
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If secA = x + 1/4x, than prove that secA + tanA = 2x + 1/2x.
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secA=x+1/4x∴, sec²A=(x+1/4x)²=x²+2.x.1/4x+1/16x²=x²+1/2+1/16x²Now, sec²A-tan²A=1or, ... More
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