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Mathematics
Mathematics
Problem
What is the value of
cos
(
90
∘
−
θ
)
\cos(90^{\circ}-\theta)
cos
(
9
0
∘
−
θ
)
for an acute angle
θ
\theta
θ
? a)
cos
θ
\cos \theta
cos
θ
b)
tan
θ
\tan \theta
tan
θ
c)
sin
θ
\sin \theta
sin
θ
d)
−
sin
θ
-\sin \theta
−
sin
θ
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