Answer:
D
Step-by-step explanation:
Using the Cosine rule to find AC
AC² = BC² + AB² - (2 × BC × AB × cosB )
= 18² + 12² - ( 2 × 18 × 12 × cos75° )
= 324 + 144 - 432cos75°
= 468 - 111.8
= 356.2 ( take the square root of both sides )
AC = 
≈ 18.9
-----------------------------------------
Using the Sine rule to find ∠ A
= 
( cross- multiply )
18.9 sinA = 18 sin75° ( divide both sides by 18.9 )
sinA = 
, then
∠ A = 
( ) ≈ 66.9°
Find all the angles and then divide or mutiply
This looks pretty challenging. If this algebra problem (Which looks like it is) or not, you could find some video explanations on Khan Academy, just pick the category in the math section and hopefully you can somewhat understand you problem more clearly. Here's the website link: https://www.khanacademy.org/
Sorry I can't directly help you ;-;
Answer:Not Here
Step-by-step explanation:.dd
Answer: hello your question is poorly written attached below is the complete question
answer:
The series is Convergent
sum of series = 55 / 6 = 9.166
Step-by-step explanation:
The series in this question is Convergent
attached below is the prove
The sum of the series = 55 / 6 = 9.166
attached below is the required solution
