The angle is in the second quadrant so only the sine is positive .
Length of the hypotenuse = sqrt (-1^2 + 3^2) = sqrt10
sine = 1/sqrt10 = 0.3162 to 4 dec places
tangent = 1 / -3 = -0.3333 to 4 d p's
cosine = -3/sqrt10 = -0.9487 to 4 d, p's.
First you would do $325.49 divided by 20 and you would get $16.27. so you would need $16.27 a week.
Answer:
it's part of the real number system
it's a rational number
it's an integer
Step-by-step explanation:
