Question

if cos 5theta = a0 + a1 cos theta+a2 cos^2 theta + a3 cos^3 theta + a4 cos^4 theta +a5 cos^5 theta then find these values....
1)a0
2)a1
3)a3
4)a5 ​
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Answer 1

Answer:

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Answer 2

Step-by-step explanation:

1)a0 =0

2)a1=5

3)a3=-20

4)a5=16