Set t = 0 to find the initial height
2ab x cos(C) = 7 since
a^2 + b^2 - 2ab x cos(C) = c^2
2ab x cos(C) = a^2 + b^2 - c^2
2ab x cos(C) = 2^2 + 2^2 - 1^2
2ab x cos(C) = 7
An equation of the form

describes a line
that passes through the origin and whose tangent corresponds to

. Generally, any equation formatted as

represents a line.
2G=B+3
G=B-4
2(B-4)=B+3
2B-8=B+3
B=11
Bert possesses 11 cents