Hello,
I suppose a and b are vectors
and i and j unit's vectors

The slope interception is going to be y=15
On the unit circle: the end of the terminal side of a 90 degree angle is (1,0) where 1 is the value of sin(90°) and 0 is the value of cos(90°)
On the graph of sine: 90° =

radians. if f(x) = sin(x) in radians, f(

) = 1/2
2.5 pounds or exact fraction 5/2 or 2 1/2 if you want a mixed fraction
Answer:
3ft=1yard
Step-by-step explanation: