Answer:
11. screenshot attached
12.screenshot attached
13. C
14. B
15. D
16. A
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
(18)
Since BD is an angle bisector , then
∠ DBC = ∠ ABD = 57°
∠ ABC = ∠ ABD + ∠ DBC = 57° + 57° = 114°
(19)
Since BD is an angle bisector , then ∠ ABD = ∠DBC
∠ ABC = 110° , so
∠ ABD = ∠ DBC = 110° ÷ 2 = 55°
Use law of sines and cross multiply and simplify
To solve this problem you must apply the proccedure shown below:
1. You have the following angle given in the problen above:
-230°
2. Then, to f<span>ind the least positive angle measurement that is coterminal with -230°, you must add 360°, as below:
coterminal angle=-230°+360°
coterminal angle=130°
3. Therefore, as you can see, the answer is: 130°</span>
Answer:
8.67
Step-by-step explanation:
-9t+18= -60
60+18=9t
78=9t
t= 78/9
=8.66