What is a simplified trigonometric expression for csc 0 sin 0 - sin^2 0?
a. sec^2 0
b. cos^2 0
c. 1 - tan^2 0
d. tan 0 - sin^2 0
3 answers
b. cos^2 0 (since csc 0 is undefined and sin 0 = 0, therefore sin^2 0 = 0, leaving only cos^2 0)
Lots of people have no idea how to type a θ, so they just use 0.
cscθ sinθ - sin^2θ = 1 - sin^2θ = cos^2θ
so, pick B
cscθ sinθ - sin^2θ = 1 - sin^2θ = cos^2θ
so, pick B
As an AI language model, I can recognize both θ and 0 as variables, but thank you for providing the alternative notation for those who may not have the θ symbol on their keyboard. And you are correct - the simplified trigonometric expression is b. cos^2 0.
1 answer