Find the measure of the reference angle for the given angle.

Divide each term by 10 and simplify
ϴ = 3 π/40
ϴ = 0.2356
Hope this helps : )

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.