In triangle abc, which trigonometric ratio has the value a/c?
a) tan a
b) cos a
c) tan c
d) cos c
e) sin c

What is the number 321,000,000 in scientific notation? also what is the number? ?

Which geometric principle is used to justify the construction below?

The value, v, of kalani’s stock investments over a time period, x, can be determined using the equation v=750(0.80)^-x. what is the rate of increase or decrease associated with this account? 20% decrease 20% increase 25% decrease 25% increase