Question

What is angle a and c if b is 63 degrees? You will get 100 points for answering please help

Answer 1

Angle A measures 76°

Explanation:

The three interior angles of a triangle will always equal 180. Therefore:

`(63)+(x+7)+(2x+8)=180`

Solve for x. Add and combine like terms:

`78+3x=180`

Subtract 78 from both sides:

`3x=102`

Divide both sides by 3. So, the value of x is:

`x=34`

Angle A is given by:

`m\angle A=2x+8`

Since we know that x = 38:

`m\angle A=2(34)+8=76`

Angle A measures 76°