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Use the fact that trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.
tan 1080 degrees

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alekos
1080-360 = 720
720-360=360
360-360=0

so tan 1080 = tan 0 = 0
Hey, Hope This Helps 

1080-360=720
720-360=360
360-360=0
Which is 1080=Tan=0=0

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