Trigonometry Examples

${(\cos (0) + \cos (0))}^{2} + {(\cos (0) + \cos (0))}^{2}$

Step 1

Simplify each term.

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Step 1.1

Simplify each term.

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Step 1.1.1

The exact value of $\cos (0)$ is $1$ .

${(1 + \cos (0))}^{2} + {(\cos (0) + \cos (0))}^{2}$

Step 1.1.2

The exact value of $\cos (0)$ is $1$ .

${(1 + 1)}^{2} + {(\cos (0) + \cos (0))}^{2}$

Step 1.2

Add $1$ and $1$ .

$2^{2} + {(\cos (0) + \cos (0))}^{2}$

Step 1.3

Raise $2$ to the power of $2$ .

$4 + {(\cos (0) + \cos (0))}^{2}$

Step 1.4

Simplify each term.

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Step 1.4.1

The exact value of $\cos (0)$ is $1$ .

$4 + {(1 + \cos (0))}^{2}$

Step 1.4.2

The exact value of $\cos (0)$ is $1$ .

$4 + {(1 + 1)}^{2}$

Step 1.5

Add $1$ and $1$ .

$4 + 2^{2}$

Step 1.6

Raise $2$ to the power of $2$ .

$4 + 4$

Step 2

Add $4$ and $4$ .

$8$