Maths-
General
Easy

Question

If 5 cas 2 theta plus 2 Cos squared space left parenthesis theta divided by 2 right parenthesis plus 1 equals 0 comma 0 less than theta less than pi not stretchy rightwards double arrow theta equals

  1. pi over 3
  2. pi over 3 comma Cos to the power of negative 1 end exponent space open parentheses 3 over 5 close parentheses
  3. Cos to the power of negative 1 end exponent space open parentheses 3 over 5 close parentheses
  4. pi over 3 comma pi minus Cos to the power of negative 1 end exponent space open parentheses 3 over 5 close parentheses

The correct answer is: pi over 3 comma pi minus Cos to the power of negative 1 end exponent space open parentheses 3 over 5 close parentheses

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