Question

In ∆ ABC, if m∠ A = 7π 36 c , m∠ B = 120°, find m∠ C in degree and radian.

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

In  ABC,

mA =

c 2

3

 = 2 180

3

   

     

= 120

and mB = 45

But, mA + mB + mC = 180

....(sum of measures of angles of a triangle is 180)

 120 + 45 + mC = 180

 mC = 180  165 = 15

=

c

15

180

  

     =

c

12

  

   

 mC = 15 =

c

12

  

 