Question

if a +b = π/2 and Sina = 1/2 then find the value of b

Answer 1

=>sin a = 1/2
=>sin a = sin 30°
=>a = 30 °
than,
=>a + b = π/2
=>30° + b = 180/2
=>30° + b = 90°
=> b = 90° - 30° = 60° will be the answer