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Popular >

cos^2(x)=5

Solution

cos^{2} (x) = 5

Solution

No Solution for x \in R

Solution steps

cos^{2} (x) = 5

Solve by substitution

cos^{2} (x) = 5

Let:

cos (x) = u

u^{2} = 5

u^{2} = 5 : u = 5, u = - 5

u^{2} = 5

For

x^{2} = f (a)

the solutions are

x = f (a), - f (a)

u = 5, u = - 5

Substitute back

u = cos (x)

cos (x) = 5, cos (x) = - 5

cos (x) = 5, cos (x) = - 5

cos (x) = 5 :

No Solution

cos (x) = 5

- 1 \leq cos (x) \leq 1

No Solution

cos (x) = - 5 :

No Solution

cos (x) = - 5

- 1 \leq cos (x) \leq 1

No Solution

Combine all the solutions

No Solution for x \in R

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2 sin^{2} (x) - 1 = cos (x), 0 \leq x \leq 2 π

solvefor x,cos(3y)=tan(2x)solve for

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Frequently Asked Questions (FAQ)

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