Is the square of LIM x → 0 (cosx-cos3x) / X equal to? Lim x → 0 (cosx-cos3x) / x square, please write the steps!

Is the square of LIM x → 0 (cosx-cos3x) / X equal to? Lim x → 0 (cosx-cos3x) / x square, please write the steps!

The square of LIM x → 0 (cosx-cos3x) / x = 4 Lim x → 0 (SiNx / 2 divided by X / 2) = 4 * 1 = 4
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