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Mathematics
Mathematics
Problem
The value of
(
sin
70
∘
)
(
cot
10
∘
cot
70
∘
−
1
)
(\sin 70^\circ)(\cot 10^\circ \cot 70^\circ - 1)
(
sin
7
0
∘
)
(
cot
1
0
∘
cot
7
0
∘
−
1
)
is (a) 1 (b) 0 (c)
3
/
2
3/2
3/2
(d)
2
/
3
2/3
2/3
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