Answer:
not sure about second, but one is the 30, 60, 90 angle triangle. That one i'm 100 percent sure of (30, 60, 90).
Step-by-step explanation:
Answer:
5x+16
Step-by-step explanation:
distributive property
2x+12+3x+4
combine like terms
5x+16
Step-by-step explanation:
X + 9= 7
get x by itself you -9 on both sides
X + 9 = 7
- 9. -9
X = -2
Answer:
The answer to your question is:
a) cot B = 1/2
b) cos A = 2√5 / 5
c) csc B = √5 / 2
Step-by-step explanation:
Data
BC = 4
AC = 8
Pythagorean theorem
AB² = AC² + BC²
AB² = 64 + 16
AB² = 80
AB = ![\sqrt{80} = 4\sqrt{5}](https://tex.z-dn.net/?f=%5Csqrt%7B80%7D%20%20%3D%20%204%5Csqrt%7B5%7D)
Cot B = adjacent side / opposite side = 4/8 = 1/2
cos A = adjacent side / hypotenuse = 8/4√5 = 2![\sqrt{5} / 5](https://tex.z-dn.net/?f=%5Csqrt%7B5%7D%20%2F%205)
csc B = hypotenuse / opposite side = 4√5 / 8 = √5/2