Answer: y ≈ 10.6 cm
Step-by-step explanation:
The cosine function relates the adjacent side to the hypotenuse in a right triangle. The side adjacent to the 20° angle is 10 cm.
cos(20°) = (10 cm)/y
y = (10 cm)/cos(20°)
y ≈ 10.6 cm
Answer:
$39.68
Step-by-step explanation:
12.40÷2.4=4.96
4.96×8=39.68
Answer:
see the attachment photo!
The area of a triangle is base length x height then divide all by 2,
so 12 x 10 /2
=60 ft²
Area of sector = 1/2 * r^2 * x where r = radius and x = angle in radians
86 = 1/2 * r^2 * pi/4
r^2 = 2 * 86 * 4 / pi = 219
r = sqrt 219
= 14.80
