A ladder 15 metres long leans against a vertical wall so that the top of the ladder is 12 metres above the ground. What angle does the ladder make a. With the ground
b. With the wall?

step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

using pemdas, (order of operations) you'll see the answer is 24.

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