Hello!
To find cosine, use the formula cos = adjacent / hypotenuse.
According to angle B, adjacent of angle B is side A, and the hypotenuse is side c because the hypotenuse is always opposite the right angle.
Therefore, the cosine of angle B is a/c.
It does not matter how many times the coin is being tossed, the theoretical probability of heads still remains as 50% for a single given toss.
Subtract 6 which leaves u with -3p=-18 then divide by three on both sides to get p=6
1/8 because if u simplify your answer..to have 4 as the denominator it would work easier
