Question

what is the domain and range of sin x, tan x, sec x​

Answer 1

It means that tan x will be defined for all values except the values that will make cos x = 0, because a fraction with denominator 0 is not defined. Hence, for these values, tan x is not defined. So, the domain of f(x) = tan x will be R – \frac{(2n+1)π}{2} and the range will be set of all real numbers, R.

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Answer 2

f(x) = sin ( x ) (-∞ , + ∞) [-1 , 1]

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