lim of (tan2x)/x as x approaches 0
= lim of (2*sin2x)/(2x*cos2x) as x approaches 0
But lim of (sin2x)/2x as x approaches 0 = 1
=> lim of (sin2x)/(x*cos2x) as x approaches 0
= lim of 2/cos2x as x approaches 0
= 2/cos0
= 2/1
= 2
U understand???
= lim of (2*sin2x)/(2x*cos2x) as x approaches 0
But lim of (sin2x)/2x as x approaches 0 = 1
=> lim of (sin2x)/(x*cos2x) as x approaches 0
= lim of 2/cos2x as x approaches 0
= 2/cos0
= 2/1
= 2
U understand???
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