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anonymous
 4 years ago
Find the sin and cos of theta.
(diagram)
anonymous
 4 years ago
Find the sin and cos of theta. (diagram)

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1328328468937:dw

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.2Remember that sin is side opposite/hypotenuse and cos = side adjacent/hypotenuse. \[\sin \theta = \frac{12}{13}\]

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.2\[\cos \theta=\frac{5}{13}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0theta doesn't equal 360 minus the angle between 5 and 13, just 180 minus that angle... is it still that simple?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.2So yes. After you find your reference angle, subtract it from 180 to get the angle measured counterclockwise from the positive x axis.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0how do you find the reference angle?

dumbcow
 4 years ago
Best ResponseYou've already chosen the best response.0depends on which quadrant you are in: Let A be the angle, R be reference angle Quad 1: R =A Quad 2: R = 180A Quad 3: R = A180 Quad 4: R = 360 A
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