SOLUTION: in triangle ABC, A=27 degrees 35' , B=78 degrees 23' , and c=19.find a.round to the nearest tenth.
a)8.6
b)9.2
c)12.8
d)19.4
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Question 212761: in triangle ABC, A=27 degrees 35' , B=78 degrees 23' , and c=19.find a.round to the nearest tenth.
a)8.6
b)9.2
c)12.8
d)19.4
Answer by drj(1380) (Show Source): You can put this solution on YOUR website!
In triangle ABC, A=27 degrees 35' , B=78 degrees 23' , and c= 19. Find a and round to the nearest tenth.
a)8.6
b)9.2
c)12.8
d)19.4
Step 1. Convert angles A and B to decimal form (where 1 degree = 60 minutes)
degrees
degrees
Step 2. Use a property of a triangle where sum of the angles of a triangle is 180 degrees to find angle C
Step 2. To find c, Law of Sines
Step 3. ANSWER IS 9.2 or (b)
I hope the above steps were helpful.
And good luck in your studies!
For free Step-By-Step Videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra or for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.
Respectfully,
Dr J
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