Simplify cos(sin(-1 square root of 2/2))

$\cos (\sin (- 1 \sqrt{\frac{2}{2}}))$

Divide $2$ by $2$ .

$\cos (\sin (- 1 \sqrt{1}))$

Any root of $1$ is $1$ .

$\cos (\sin (- 1 \cdot 1))$

Multiply $- 1$ by $1$ .

$\cos (\sin (- 1))$

Evaluate $\sin (- 1)$ .

$\cos (- 0.0174524)$

The result can be shown in multiple forms.

Exact Form:

$\cos (- 0.0174524)$

Decimal Form:

$0.99984771 \dots$

Simplify cos(sin(-1 square root of 2/2))

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