Q. Which one of the following is the solution for ๐๐๐ 2๐ฅ + 2๐๐๐ ๐ฅ + 1 = 0, for values of ๐ฅ in the range of 0ยฐ < ๐ฅ < 360ยฐ?
(A) 45ยฐ (B) 90ยฐ (C) 180ยฐ (D) 270ยฐ
Ans: 180ยฐ
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