Question

if
$\alpha = 90 \beta = 60 \: \gamma = 30$
then find Drs
​

Answer 1

Answer:

here is your answer

Step-by-step explanation:

a=90

b= 60

y =30

( a+b-c)

( 90+60 - 30)

( 150 -30)

( 120) is the answer.....