Question

find b if a =5/4 right angles ​

Answer 1

Answer:

a  = 5/4 * 90°

⇒ a = 112.5°

a + b = 360° (sum of angles around a point)

⇒ b = 360° - 112.5°

= 247.5

Answer 2

Thus, the value of $b$ is $247.5$°

Step-by-step explanation:

Given;

In figure, $a=\frac{5}{4}$ then $b=?$

∴ $a$ is given,

$a=\frac{5}{4}\times 90$°

∴$a=112.5$°

We know;

Sum of all angles around a point is equal to $360$°

∴$a+b=360$

⇒$b=360-112.5$

∴$b=247.5$°

So, the value of $b$ is $247.5$°