Question

please tell me the answer in process ​

Answer 1

you are looking too gorgeous sweety

Answer 2

Answer:

So the value of unknown number is 135°

Step-by-step explanation:

This is isosceles right angled triangle

if we need to find the unknown value that is $x$.

So, we know that opposite 2 side of Δ is always equal to exterior angle.

Here, 1 angle is given that it is 90°

So remaining 2 side angle will be 180° - 90° = 90°

Remaining 2 side equation will be:-

$x$ +  $x$ = 90°

2$x$ = 90°

$x$ = 90°/2

$x$ = 45°

So, the value of remaining 2 side angle = 45°

So here, 2 opposite is 90° and 45°

So

$x$ = 90°+45°

$x$  = 135°

So the value of unknown number is 135°