What is the general solution for cos(x)=0.45,cos(pi-x) ?

The general solution for cos(x)=0.45,cos(pi-x) is No Solution for x\in\mathbb{R}

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cos(x)=0.45,cos(pi-x)

cos (x) = 0.45, cos (π - x)

No Solution for x \in R

Solution steps

cos (x) = 0.45, cos (π - x)

Apply trig inverse properties

cos (x) = 0.45

General solutions for

cos (x) = 0.45

cos (x) = a \Rightarrow x = arccos (a) + 2 πn, x = 2 π - arccos (a) + 2 πn

x = arccos (0.45) + 2 πn, x = 2 π - arccos (0.45) + 2 πn

x = arccos (0.45) + 2 πn, x = 2 π - arccos (0.45) + 2 πn

Solutions for the range

cos (π - x)

No Solution for x \in R

4 cos^{2} (x) + 9 sin (x) - 9 = 0

tan (θ) = - \frac{12}{5}, \frac{π}{2} \leq θ \leq π

cos (x) = sin (2 x + \frac{π}{2}), 0 \leq x \leq 2 π

cos (x) = - 0.397

sin (2 x) cos (x) + cos (2 x) sin (x) = \frac{3}{2}

What is the general solution for cos(x)=0.45,cos(pi-x) ?
The general solution for cos(x)=0.45,cos(pi-x) is No Solution for x\in\mathbb{R}