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Karthik

· started a discussion

· 1 Months ago

Explanation? a doubt? (Question: 285215.0 )

there will be a cos^2 45 in between and it cannot be paired so answer 16?

Question:

What is the value of – cos20º + cos23º + cos26º + …. + cos290º

Options:
A)

15

B)

15.5

C)

16

D)

16.5

Solution:

Ans: (b)

  

Knowledge Expert

· commented

· 1 Months ago

Dear student
Please solve the Question carefully
Cos 45degree value is already put in the solution.

Best wishes
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