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Problems
Mathematics
Mathematics
Problem
If
0
∘
<
θ
<
90
∘
0^{\circ}<\theta<90^{\circ}
0
∘
<
θ
<
9
0
∘
and
cos
θ
=
sin
28
∘
\cos \theta = \sin 28^{\circ}
cos
θ
=
sin
2
8
∘
, then
θ
\theta
θ
equals a)
28
∘
28^{\circ}
2
8
∘
b)
68
∘
68^{\circ}
6
8
∘
c)
62
∘
62^{\circ}
6
2
∘
d)
118
∘
118^{\circ}
11
8
∘
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