if 8tita= 180 degrees. show that cos7 tita+ cottita= 0

Asked by saket shandilya | 12th Jan, 2014, 06:22: PM

Expert Answer:

Kindly check, the question should be to prove cos7θ + cosθ = 0.
The answer is as follows:
 

Answered by  | 12th Jan, 2014, 10:40: PM

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