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TMUA 2019 · Paper 1 · Question 19
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Find the value of
k
=
0
∑
90
sin
(
10
+
90
k
)
∘
A
0
B
sin
1
0
∘
C
sin
10
0
∘
D
sin
19
0
∘
E
sin
28
0
∘
F
1
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