Solve questions 12 to 18 Q12. if 3 cos 2 25 ° + cos 2 65 ° sin 2 27 ° + cos 2 63 ° = a 3 , then find the value of a Q13. if sin(x – 20∘) = cos(3x – 10∘), then find the value of x Share with your friends Share 0 Yash Ranjan Mishra answered this 1 View Full Answer