Sin(2a - 10) = cos(a + 40)
Answers
Answered by
0
Answer:
Sin (2a-10) = Cos (a+40)
=> Sin (2a-40) = Sin {90 - (a+40)}
=> Sin (2a-40) = Sin {90 - a - 40}
=> 2a-40 = 90-a-40
=> 2a-40 = 50-a
=> 2a+a = 50+40
=> 3a = 90
=> a = 30
Similar questions