Question

How do you calculate `tan A= 8.4`?

Answer 1

`A = 83^@21 + K180^@`

Explanation:

tan A = 8.4
Calculator gives:
tan A = 8.4 --> `A = 83^@21`
Trig unit circle gives another A that has the same tan value (8.5):
A = 83.21 + 180 = 263^@21
Answers for interval (0, 360):
`83^@21, 263^@21`
General answers:
`A = 83^@21 + k180^@`