Answer:
area of the trapezoid=1/2(7+12)×5
=47.5cm
answer
yes
because coefficient and constant can be multiplied or divided for example 5x * 7 equals 35 but if you are coefficient and constant you couldn't like an example 7 + 6x equals 7 + 6x
Hello :
cos60 = cos(-60)=0.5
