The equation that could be used to find the measure of angle B ∠B is; sin B = (√5)/5
How to use trigonometric ratios?
The trigonometric ratios are;
sin θ = opp/hyp
cos θ = adj/hyp
tan θ = opp/adj
Now, since we want to find angle B, we will use the expression;
sin B = (3/3√5)
sin B = 1/√5
Rationalizing the denominator gives us;
sin B = (√5)/5
Read more about Trigonometric Ratios at; https://brainly.com/question/17084488
#SPJ1
