Using the above graph, if 10º < x < 60º, what is the value of x for which sin x = cos x?
Attached Figure / Diagram
A
0o
B
20o
C
30o
D
45o
E
50o
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
From the graph; when sin x = cos x
x = 45º
Source: Myschool Past Questions Archive (Record #22354)