underroot 1- sin theta.1+ sin theta equals to 1 - sin theta/ cos theta
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Left Hand Side:
√
1
+
sin
θ
1
−
sin
θ
=
⎷
1
+
sin
θ
1
−
sin
θ
⋅
(
1
+
sin
θ
1
+
sin
θ
)
=
√
(
1
+
sin
θ
)
2
1
−
sin
2
θ
=
√
(
1
+
sin
θ
)
2
cos
2
θ
=
√
(
1
+
sin
θ
)
2
√
cos
2
θ
=
1
+
sin
θ
|
cos
θ
|
since
√
x
2
=
|
x
|
∴
=
Right Hand Side
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