Question

24. Let cscθ = 5 with θ ∈QII and find the following.

*use double identity
a) cosθ b) cotθ

Answer 1

No idea what a double identity is, but draw the triangle. The missing side is √24. In QII, that means x is negative, so

cosθ = x/r = -√24/5
cotθ = x/y = -√24/1