हल करना cos^2 n - cos x + 1/4 = 0 | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$\cos^{2}n-\cos\ x+\frac{1}{4}=0$$