Answer:
Option D
Step-by-step explanation:
According to law of cosines =
where 'a' is the uknown side , 'b' & 'c' are the given sides and angleA is the angle opposite to the uknown side i.e. opposite to 'a'.
Using the Law of cosines , we'll find the length of AC .
In option D , if we'll round of 8.86 , then its appx 9. So option D is right
Answer:
It's a.
Step-by-step explanation:
15s*3+180＝225
30s*3+180＝270
60s*3+180＝360
30s*3+180＝270
Answer:
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Since bc = 6, that makes db = 3 and cd = 3rad3
cd (2) = ac. so ac = 6rad3
so to get ad, you square ac which = 108, square cd which = 3rad3 which equals 27. 108 - 27 = 81. the sqaure root of 81 is 9. ad = 9
