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4 Important Trigonometric Limit Practice Problems for IIT
sir in the 3rd sum there is a mistake with cosx - cos (a+2x) ...it should be cosa - cos (a+2x) right? and the final and would be 4tan(a+x)seca right??
Ashish Bajpai
9 months ago
why ? I see no issue
Riya Vishwakarma
9 months ago
sir becoz in the question it's tan(a) so acc to ur formula tanA - tanB = sin(A-B)/cosA.cosB