Question

if sin x+cosy =1 x=30 degree and y is acute angle find the value of y

Answer 1

Sin x + cos y =1 and we know that x =30°
Sin 30°+cosy=1 (Sin30°=1/2)
1/2+cosy=1
Cosy=1-1/2
Cosy=1/2
Since we also know that cos60°=1/2
Therefore y=60°