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Find m A.(1/3)° B. 0.99° C. 1.23° D. 70.53°

Find m A.(1/3)° B. 0.99° C. 1.23° D. 70.53°
asked 13.6k views
15 votes
Find m A.(1/3)°
B. 0.99°
C. 1.23°
D. 70.53°

Find m A.(1/3)° B. 0.99° C. 1.23° D. 70.53°-example-1
asked
User Cwschmidt
by
8.6k points

2 Answers

6 votes

Answer:

D

Explanation:

using the cosine ratio in the right triangle

cos ABC =
(adjacent)/(hypotenuse) =
(BC)/(AB) =
(3)/(9) =
(1)/(3) , then

∠ ABC =
cos^(-1) (
(1)/(3) ) ≈ 70.53° ( to 2 dec. places )

answered
User RobV
by
8.3k points
5 votes
The answer is D!! Can I get Braniest
answered
User Dmitry Kudryavtsev
by
8.2k points
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