Question

find the value of cos^2(5)+cos^2(10)+cos^2(15)+cos^2(20)........................+cos^2(180)
plz tell me fast. any one give me the correct answer there question is for genius only​

Answer 1

Answer:

cos^2(5^0)+cos^2(10^0)+cos^2(15^0)+ . ... Question from Class 11 Chapter Trigonometric Functions ... 2:27 · The value of ` (cos^2 33^0-cos^ 2 57. play. 3:56 ... Evaluate `[[sin^2 theta ..

Answer 2

Answer:

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please say fast it's urgent