Question

Find the measure of angle A for the triangle shownThe value of angle Ais

Answer 1

A = 47

Step-by-step explanation:

The sum of the angles in a triangle adds up to 180 degrees; therefore,

`A+B+C=180`

Since B = 31 and C = 102, we have

`31+102+A=180`
`133+A=180`

Subtracting 133 from both sides gives

`A=180-133`
`A=47`

which is our answer!