Question

ed.
Which of the following relation is correct :
(1)
V1 + cos 20
sin 8 =
2.
1 - cos 20
cos 8 =
2
(2)
6 o
cos 0 = 2 sin cos
2
co.
0
COS
2
1 + cos 6
fu
2​

Answer 1

Answer:

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