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I need help with how to solve this problem, not the actual answer. Thanks in advance!

 

(Capital letters are angles, lowercase letters are sides)

 

A                  

                             c

b

 

C                          a                              B

 

 

Determine the angles A and B given the following information:

 

side a = 15

side c = 22

 Dec 20, 2019
 #1
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+1

The information given is not sufficient to define a unique triangle.

In addition you need the third side, or the angle B, or, see the next sentence.

 

If angle C is a right-angle, as is possibly indicated by the diagram, (and if it is you should say so), 

then cos(B) = a/c etc. .

 Dec 20, 2019
 #2
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0

Cos B = a / c = 15 / 22

Angle B =Arccos (15 / 22) =47.01 degrees.

 

Angle A = 90 - 47.01 = 42.99 degrees, or:

Sin A = 15 / 22

Angle A =Arcsin(15 / 22) = 42.99 degrees.

 Dec 20, 2019
 #3
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0

Someone here who can't read.

Guest Dec 20, 2019

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