Find the exact value of tan 5 π.
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Step-by-step explanation:

tan  5 π

Remove full rotations of  2 π  until the angle is between 0  and  2 π .  tan  π

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because tangent is negative in the second quadrant.  tan  0   The exact value of  tan   0  is  0 .  Multiply   1  by  0 .

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)