Question

Given that Sinα=½
and Cosß = ½, then the value (α+β) is
a) 0°
b) 30°
c) 60°
d) 90°​

Answer 1

ATP,

sin α = cos β

sin α = sin (90-β)

α = 90-β

α+β=90-------------(d)

Answer 2

d) ß + α = 90 °

Step-by-step explanation:

Sinα=½

Sin30=½ means α = 30 °

Cosß = ½

Cos60 = ½    means ß = 60

ß + α = 90 °