Question

solve ...1st one ...​

Answer 1

Answer:

Step-by-step explanation:

anSwEr is option (B)90°

Explaination:

A straight angle is exactly 180 degrees and is composed of exactly one line with no changes in vector.

So, alpha+beta+gama=180°

=> alpha+beta=90°(given)

=> 90+gama=180

=> gama=180–90

Hence, gama =90°

HoPe hELpS yu^-^