The fraction 8/21 cannot be simplified because the numerator and denominator don't have a common factor except 1.
A) is counting down by 3
B) is counting up by 5
Answer: y= -5x+4
Step-by-step explanation:
Cos (A-B) - cos (A+B)
= (cosAcosB +sinAsinB) - (cosAcosB - sinAsinB)
=2sinAsinB
Ans: 4
Answer: I think f
Step-by-step explanation:
