Answer:
126 degree
Step-by-step explanation:
use alternate angles and linear pair
3x-4 is the answer, you have to see that if its 3 times her nieces age it would be 3x and if its four less than that it is 3x-4
Answer:
0
Step-by-step explanation:
Answer:
Step-by-step explanation:
Use the law of sines.

Plug values in.

Cross multiply.

Hope that helps.