Question

if sin x + cos y=1 x=30degree abd y is an acute angle,find the value of y .

Answer 1

sin x + cos y = 1

given that x = π/6

sin x = 1/2

therefore, cos y = 1 - 1/2 = 1/2

therefore, cosy = 1/2

y = π/3

Answer 2

Sin x+Cos y=1

Sin 30+Cos y=1

1/2+Cos y=1

Cos y= 1/2

cos y= Cos 60

y= 60 degree