WAEC - Mathematics (1989 - No. 14)
Using the above graph, if 10º < x < 60º, what is the value of x for which sin x = cos x?
0o
20o
30o
45o
50o
Explication
From the graph; when sin x = cos x
x = 45º
x = 45º
Using the above graph, if 10º < x < 60º, what is the value of x for which sin x = cos x?