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Formula
Calculate the value
Answer
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$$\cos\left( 90 ^ { \circ } \right)$$
$0$
Simplify the expression
$\color{#FF6800}{ \cos\left( \color{#FF6800}{ 90 } ^ { \circ } \right) }$
$\cos\left(90^{\circ}\right) $ is $ 0$
$\color{#FF6800}{ 0 }$
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