Answer:
197.77
Step-by-step explanation:
Area of circle: A=pi r^2
A= pi 9^2
A= 81 pi
only half of the circle so 40.5
Area of a Square: L x W
18 x 18 = 324
324 - 40.5pi = 197.77
Answer:12m
Step-by-step explanation:
Because you are given that this is a right angled triangle, you can apply the pythagoras theorem where a^2 = b^2 + c^2
15^2 = 9^2 + x^2
225-81 = x^2
144 = x^2
x = 12m
Answer: y=mx+b find any two points on the line
Step-by-step explanation:
The hypotenuse is 17
8+15+17=40
200/40=5
All sides of triangle
l\
75 l \85
| \
|__\
40
Answer:
Adnan is incorrect because cosx and sin(90 - x) are always equivalent in any right triangle ⇒ first answer
Step-by-step explanation:
In any right triangle there are two acute angles sum of them is 90°
∴ If one of them x°, then the other is (90 - x)°
∵ cos x = adjacent/hypotenuse
∵ sin(90 - x) = opposite/hypotenuse
∵ The opposite of ∠(90 - x) is the adjacent of ∠x
∴ cosx = sin(90 - x)
