Use the cofunction identities to write an expression that is equivalent to each of the following expressions.

Question

1. a) tan 3pi/8
2. b) tan pi/6

Answer 1

tan(3π/8) = cot(π/2 - 3π/8) = cot(π/8)

Do the other one in a similar manner.

Answer 2

1. a) tan 3pi/8=.20856.....atan.208=3π/8
2.  b) tan pi/6=.009138.........Do like above.
3.