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If sec¶=x+1/4x then prove that sec¶+tan¶=2x or 1/2x

Posted by Anish Jain 6 years, 9 months ago

CBSE > Class 10 > Mathematics

1 answers

Ra Cartin 6 years, 9 months ago

Tan2= sec2-1 =(x+1/4x)square-1 =x2+1/16x2-1/2 (by a2+b2=(a+b)2-2ab) We get, (x-1/4x)=tan Sec+tan=x+1/4x+x-14x =2x

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