- Choice ARecall that |sinθ| ≤ 1 for all θ ∈ R. Thus, we need only to find θ where sinθ = ±1. Going back to your unit circle, those values are θ = ±π/2
## Skills you are tested for:

Was this explanation helpful?

- Choice ARecall that |sinθ| ≤ 1 for all θ ∈ R. Thus, we need only to find θ where sinθ = ±1. Going back to your unit circle, those values are θ = ±π/2
## Skills you are tested for:

Was this explanation helpful?

## Comments