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Mathematics
Mathematics
Problem
An angle
θ
\theta
θ
satisfies
sin
θ
=
−
3
5
\sin\theta=-\dfrac{3}{5}
sin
θ
=
−
5
3
and
π
<
θ
<
3
π
2
\pi<\theta<\dfrac{3\pi}{2}
π
<
θ
<
2
3
π
. a. (i) Identify the quadrant in which
θ
\theta
θ
lies. b. (ii) Find the exact values of
cos
θ
\cos\theta
cos
θ
and
tan
θ
\tan\theta
tan
θ
. c. (iii) Verify that
sin
2
θ
+
cos
2
θ
=
1
\sin^{2}\theta+\cos^{2}\theta=1
sin
2
θ
+
cos
2
θ
=
1
using the values obtained.
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