Question

find the value of a in each of the following. please give its explanation ​

Answer 1

Answer:

22° or 22.5°

Step-by-step explanation:

3a+2a+3a=180°

8a=180°

180/8=a

a=22.5°

Answer 2

$\huge{ \underline{ \overline \bold \red{answer \: \: \: }}}$

$\bold{3a \degree + 2a \degree + 3a \degree = 180 \degree}$

(by linear par : sum of angles of a straight line is 180°)

$\implies \bold{8a \degree = 180 \degree } \\ \\ \implies \bold{a = \cancel{\frac{180 \degree}{8 \degree}} } \: \: \: \\ \\ \implies \bold{a = \frac{45}{2} } \: \: \: \: \: \: \: \: \\ \\ \implies \boxed{\bold \pink{a = 22.5} } \: \:$

so, value of a is 22.5