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2cos(a+b)cos(a-b)=1 so prove that tan^2=1-tan^2(b)/1+3tan^2(b)

2cos(a+b)cos(a-b)=1 so prove that tan^2=1-tan^2(b)/1+3tan^2(b)

Grade:11

2 Answers

Nishant Vora IIT Patna
askIITians Faculty 2467 Points
4 years ago
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imran
19 Points
4 years ago
HI,
PLZ GIVE THE FULL SOLUTION FOR THIS QUESTION AFTER WARDS WHAT WE HAVE TO DO

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