Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\lim _ { x \rightarrow 0 } \frac { 1 - \cos 3 x } { 1 - \cos 4 x }$$

Evaluate

$\frac{9}{16}=0.5625$

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