Find y if sin y = cos 48^\circ
A
21°
B
24°
C
42°
D
48°
E
102°
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Cos 48º = 0.6691
Then Sin y = 0.6691 (since sin y = cos 48º)
y = Sin\(^{-1}\) 0.6691 = 42º
Source: Myschool Past Questions Archive (Record #42532)