How do you find the value of $cos (\frac{π}{2})$ $cos ((pi)/2)$ using the graph?

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Answer 1 · 2016-02-12T09:35:13

$180^{o} is π radians. So \frac{π}{2} is 90^{o}$ $180^o" is "pi" radians. So "pi/2" is "90^o$
Tony B

$cos (\frac{π}{2}) \to (x, y) \to (\frac{π}{2}, 0)$ $cos(pi/2)" "->" "(x,y)" "->" "(pi/2,0)$

The $cos (x)$ $cos(x)""$ is the value you read off from the y axis

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