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Mathematics
Mathematics
Problem
For an acute angle
θ
\theta
θ
,
cos
θ
=
12
13
\cos \theta = \dfrac{12}{13}
cos
θ
=
13
12
. Evaluate
sin
2
θ
cos
θ
+
tan
θ
\dfrac{\sin^{2}\theta}{\cos \theta} + \tan \theta
cos
θ
sin
2
θ
+
tan
θ
. a)
25
156
\dfrac{25}{156}
156
25
b)
15
26
\dfrac{15}{26}
26
15
c)
5
6
\dfrac{5}{6}
6
5
d)
85
144
\dfrac{85}{144}
144
85
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