Answer: disregard my previous answer, it was incorrect, looking for right one right now
(you can delete this if you want)
Answer:
65º
Step-by-step explanation:
- The angle of a straight line is 180º, so ∠ABD=180º and ∠ABC=(180-6x)º
- The sum of the interior angles of a triangle is 180, so (x+40)º+(3x+10)º+(180-6x)º=180
- We can solve from there, x+40+3x+10+180-6x=180
- Combine like terms, -2x+230=180
- Subtract 230, -2x=-50
- Divide by -2, x=25
- m∠CAB=(x+40)º=(25+40)º=65º
- m∠ABC=(180-6x)º=(180-150)º=30º
- m∠BCA=(3x+10)º=(75+10)º=85º
D2 - d + 4d = d2 - 8d
d2 + 3d = d2 - 8d
d2 - d2 = - 8d - 3d
0 = - 11d
Future help- Use the law of sines and law of cosines to solve triangles.
Answer- D= 26° b= 5.48 d=2.57
