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What does tan 0 equal?

Answer 1

#tan(0)# is "undefined"

In general based on a triangle with adjacent side on the X-axis and a hypotenuse extending from the origin to a point on the unit circle #tan# is defined as #color(white)("XXX")tan(theta) = ("opposite side")/("adjacent side")#

As #theta rarr 0# the #"adjacent side" rarr 0# so the definition of #tan(0)# becomes an attempt to divide by #0#, an operation which is "undefined"

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Answer 2

Jordan Armstrong

The tangent of 0 degrees is equal to 0.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.