Trigonometry Examples

$2 \cos^{2} (165 - 1)$

Step 1

Subtract $1$ from $165$ .

$2 \cos^{2} (164)$

Step 2

The result can be shown in multiple forms.

Exact Form:

$2 \cos^{2} (164)$

Decimal Form:

$1.84804809 \dots$