Question

A triangle has three angles, which we call the first, second and third angle. The second angle is twice the first angle. The third angle is 42 degrees. The first angle is

Answer 1

Answer:

I hope it will help you ❣️

Answer 2

Answer:

First angle = 46°

Second angle = 92°

Third angle = 42°

Step-by-step explanation:

Given :

Sum of all angles of triangle = 180°

Third angle = 42°

Second angle is twice than first angle

To find :

First angle and Second angle

Taken :

Let the second angle be 2x

Let the first angle be x

So , the equation will form like this -:

$\boxed{\sf{{x}^{\circ}+{2x}^{\circ}+{42}^{\circ}={180}^{\circ}}}$

Solution :

>> x+2x+42°=180°

>> 3x+42°=180°

>> 3x=180°-42°

>> 3x=138°

>> x=138°/3

>> x= 46°

So , the first angle is 46° .

Since , the second angle is twice than the first angle . The second angle will be 92° .

So , the first and second angles are 46° and 92° respectively....