Evaulate `underset (x rarr 0)Lim (cos 2x-1)/(cos x-1)`.

Evaluate underset (x rarr 0)lim(cosec x-cot x)

(a)Evaluate underset (x rarr 0)Lt(sin x^0)/x

Evaluate underset (x rarr 0)Lt [(1-cos 4x)/(x^2)] .

Evaluate (ii) underset (x rarr a) (cos x-cos a)/(x-a) .

Find underset(x rarr 0)lim (1-cos x)/x .

Evaluate underset (x rarr -1)Lim (x^2-5x+6)/(x-1) .

Evalute lim_(xrarr0)(cos2x-1)/(cosx-1)

Evaluate underset (x rarr 0)Lt (sin 3x+7x)/(3x+sin 7x)

Evaluate lim_(x rarr 0) (cos 2x - 1)/(cos x - 1)

The value of underset(x rarr 0)lim ""(cot 4x)/("cosec 3x") is equal to a) (4)/(3) b) (3)/(4) c) (2)/(3) d) (3)/(2)