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How do you tell whether the value of tan 90 degrees is positive, negative, zero or undefined?

How do you tell whether the value of tan 90 degrees is positive, negative, zero or undefined?

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Undefined We have: tan90^@ Know that, tantheta=(sintheta)/(costheta) So here, we get tan90^@=(sin90^@)/(cos90^@) Looking at the trigonometric table, we see that sin90^@=1,cos90^@=0. Therefore, tan90^@=1/0 Since anything divided by 0 (except 0 itself) is considered to be undefined, we get that tan90^@ is undefined as well.

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College Physics: Vectors] Find theta using tan-1: vectors (y/x) are Y=8/X=0. Doing Tan-1(8/0) : undefined. Using the Phet simulation for vector the angle is 90 degrees as I will show in image.

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