2.Anita again missed the class of instruction on finding the unknown side lengths using trigonometric ratios. Teach her how to find the unknown length in the following example.
In the triangle ABC, angle A= 90, angle B=30 and BC=15, AB=8.

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