6. Solve the equation 6cosx + 7 cos x- 5 = 0, for - 2nSxS 2n. Express answer as an exact value.

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Q: What equation could you write to determine the value of x? (3r-2y (10x-11)" (3x + 1)

A: The given triangle has measures,   10x-11°, 3x-2°, 3x+1°