Trigonometric Limit Problem: Finding the Limit as x Approaches 0

[PotentialE]

Homework Statement

find the limit as x approaches 0 of 3sin4x / sin3x

Homework Equations

sin2x = 2sinxcosx
lim as x ->0 of sinx / x =1

The Attempt at a Solution

sin4x = 2 sin2x cos2x

 

[kushan]

Divide and multiply both numerator and denominator with the angles of resective sin .
You will get one famous limit , after that its a breeze