What is the general solution for cos(2x)+5=6.25 ?

The general solution for cos(2x)+5=6.25 is No Solution for x\in\mathbb{R}

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cos(2x)+5=6.25

cos (2 x) + 5 = 6.25

No Solution for x \in R

Solution steps

cos (2 x) + 5 = 6.25

Move

5

to the right side

cos (2 x) + 5 = 6.25

Subtract

5

from both sides

cos (2 x) + 5 - 5 = 6.25 - 5

Simplify

cos (2 x) = 1.25

cos (2 x) = 1.25

- 1 \leq cos (x) \leq 1

No Solution for x \in R

sin (x) = 4 sin (8)

800 cos (x) + 800 cos^{2} (x) - 800 sin^{2} (x) = 0

csc (x) = \frac{7}{3}

3 - cos (x) = 3 - sin (x)

cos (t) = \frac{1}{3}, 0 < t < \frac{1}{2} π

What is the general solution for cos(2x)+5=6.25 ?
The general solution for cos(2x)+5=6.25 is No Solution for x\in\mathbb{R}