Question

please solve this problem ​

Answer 1

Answer:

60 degree please mark as brianlist

Answer 2

Answer:

a=60

Step-by-step explanation:

$given \\ < b = 90 \\ < c = 30 \\ by \: angle \: sum \: property \\ < a + < b + < c = 180 \\ < a + 90 + 30 = 180 \\ < a = 180 - 120 \\ < a = 60$

please mark me as brainliest