Question

If a triangle ABC, angle A is three times as large as angle C. The measure of angle B is 30 less than that of angle C. Find the measure of the angles

Answer 1

`180=a+b+c`

`180=3c+(c-30)+c`

`180=5c-30`

`210=5c`

`c=42`

`a=3c`

`a=3(42)`

`a=126`

`b=c-30`

`b=42-30`

`b=12`

Check:
126+12+42=180
180=180 ---> Checks TRUE