Question

the area of an equilateral triangle with side 203 cm,
16. In the below figure, triangle ABC = 69°, triangle ACB - 31°, find triangle bdc

Answer 1

Step-by-step explanation:

I think of 80° because every triangle contain 180 and the sum of the 2 angles that are given is 100...

And of we subtract 100 from 180 we will get 80.

Thank you.