Answer:
D. cosine
Step-by-step explanation:
As it can be seen in the figure, the triangle ABC is a right-angled triangle with Angle C = 90 degree.
In a right angle triangle, there is a formula as following:
<em>cosine (of an acute angle) = length of adjacent side/ length of hypotenuse</em>
In the figure, the point of angle B and length of hypotenuse AB are given.
We have to calculate x - length of the given side. As BC is the adjacent side of angle B
=> we can use the above formula to calculate x
So that we can use cosine
Pythagorean theorem(√82)^2 = 9^2 + x^2
x = 1 cm
15^2 = 9^2 + y^2
y = 12 cm.
12-1 = 11
Area = 9*11 = 99 cm^2
Answer:
x= 33.61 (nearest hundredth)
Step-by-step explanation:
Please see the attached pictures for the full solution.
Answer:
5 1/4
Step-by-step explanation:
To convert into an improper fraction, we times the whole number by the denominator and then add the numerator. For the first number, it is 15/4 and the second number is 7/5. Then we multiply 15/4 and 7/5 to get 5 1/4.
