Question

Sine and Cosine Ratios?

Answer 1

sine= opposite/hypotenuse

cosine= adjacent/hypotenuse

Answer 2

sin B =2/5 now find angle B first theN you will get cos B

Answer 3

angle B= sin^-1(2/5)=23.578 degrees
now
cos B=BC/5 therefore
BC=5 cos B
BC=5 cos23.578
BC=4.58 ans

Answer 4

So what is that to the nearest degree?

Answer 5

B=23.6 degree

Answer 6

that is angle B, forget BC i thought you are trying to get it too ...lol

Answer 7

Yea I have a table of trigonometric ratios to get the nearest degree but I dont know how to read it.