234 - 3 = 231
231 : 3 = 77
77 + 1 =78
78 + 1 = 79
------------------------
77 78 79
77+78+79= 234
15, 26, 48, 92, 180
26 - 15 = 13
48 - 26 = 22
92 - 48 = 44
180 - 92 = 88
26 ÷ 15 = 1.73
48 ÷ 26 = 1.84
92 ÷ 48 = 1.9167
180 ÷ 92 = 1.95
The recursive formula isn't arithmetic or geometric.
Radius is the distance from the centre to any point in the circumference. i.e. radius =
![\sqrt{ (-7-8)^{2} + (-1-7)^{2} } = \sqrt{ (-15)^{2} + (-8)^{2} } \\ = \sqrt{225+64} = \sqrt{289} =17](https://tex.z-dn.net/?f=%20%5Csqrt%7B%20%28-7-8%29%5E%7B2%7D%20%2B%20%28-1-7%29%5E%7B2%7D%20%7D%20%3D%20%5Csqrt%7B%20%28-15%29%5E%7B2%7D%20%2B%20%28-8%29%5E%7B2%7D%20%7D%20%5C%5C%20%3D%20%5Csqrt%7B225%2B64%7D%20%3D%20%5Csqrt%7B289%7D%20%3D17)
radius = 17 units
Answer:
30°
Step-by-step explanation:
The ratio of the side opposite (AB) to the hypotenuse (AC) is ...
4.5/9 = 1/2
From your memory of a short table of trig functions you know this is the sine of 30°. From the mnemonic SOH CAH TOA, you know that
Sin = Opposite/Hypotenuse
Putting these facts together gets you ...
sin(C) = 1/2 = sin(30°)
C = 30°