Describe how you would convince a friend that sin(x + y) does not equal sin x + sin y.

the graph line crosses the x axis at both -6 and -2, so the answer would be the second one.

triangle eg 7.5 × cos "a" or 7.5 × sin "b" or 6 tan"a"

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).