# In triangle ABC, a = 7, A = 30 degrees, B = 70 degrees, What is angle C and length of side c?

##### 2 Answers

Apr 26, 2017

#### Explanation:

Since the sum of the angles in a triangle is 180°, the angle C is :

You could get the length of side c by applying the sine theorem:

Then

Apr 26, 2017

#### Explanation:

The sum of the three angles of a triangle is

So,

To find the length of side

#color(brown)((a)/(sin(A))=(b)/(sin(B))=(c)/(sin(C) )#

Let's use

#color(purple)((a)/(sin(A))=(c)/(sin(C) )#