Find the Exact Value cos(90-60)

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Trigonometry

$\cos (90 - 60)$

Subtract $60$ from $90$ .

$\cos (30)$

The exact value of $\cos (30)$ is $\frac{\sqrt{3}}{2}$ .

$\frac{\sqrt{3}}{2}$

The result can be shown in multiple forms.

Exact Form:

$\frac{\sqrt{3}}{2}$

Decimal Form:

$0.86602540 \dots$

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