Part A- DISCOUNT-SALES TAX--- 42.5
WITH TAX-- 45.05
part b- the tip is... 10.5
part c- 11.11
Sin(α) = sin (90-Ф)
The right answer is <span>b. In any right triangle, the sine of one acute angle is equal to the sine of its complementary angle.</span>
You can see that the base is 5 units.
The height is 3.
The area of a parallelogram is
A = B * H
A = 5 * 3
A = 15 units^2
Hope this helps!