Trigonometry Examples

${(8)}^{2} + {(6)}^{2} - 2 \cdot 8 \cdot 6 \cos (95)$

Step 1

Simplify each term.

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Step 1.1

Raise $8$ to the power of $2$ .

$64 + {(6)}^{2} - 2 \cdot 8 \cdot (6 \cos (95))$

Step 1.2

Raise $6$ to the power of $2$ .

$64 + 36 - 2 \cdot 8 \cdot (6 \cos (95))$

Step 1.3

Multiply $- 2$ by $8$ .

$64 + 36 - 16 \cdot (6 \cos (95))$

Step 1.4

Multiply $6$ by $- 16$ .

$64 + 36 - 96 \cos (95)$

Step 2

Add $64$ and $36$ .

$100 - 96 \cos (95)$

Step 3

The result can be shown in multiple forms.

Exact Form:

$100 - 96 \cos (95)$

Decimal Form:

$108.36695130 \dots$