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Mathematics
Mathematics
Problem
(i) Simplify the expression
(
1
−
sin
2
θ
)
csc
θ
−
sin
θ
cot
θ
.
\left(1-\sin^{2}\theta\right)\csc \theta-\sin \theta\cot \theta.
(
1
−
sin
2
θ
)
csc
θ
−
sin
θ
cot
θ
.
(ii) Hence, find its value for
θ
=
45
∘
\theta=45^{\circ}
θ
=
4
5
∘
.
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