Solve ques no. 37 its of class 10th
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Sec theta + tan theta =x
sec²theta-tan² theta =)Sec theta + tan theta)(Sec theta - tan theta)= 1
=> Sec theta - tan theta =1/x
Sec theta + tan theta +Sec theta -tan theta =x+1/x
=>2sec theta = (x²+1)/x
=> sec theta = (x²+1)/2x
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