Solve sin5(theta) = cos2(theta), 0< theta <180

Dear student,
sin (5θ) = cos (2θ)
cos (90 - 5θ) = cos (2θ)
90 - 5θ = 2θ
90 = 5θ + 2θ
90 = 7θ
θ = 90/7 = π14


Regards

  • -3
Please answer my question
  • 1
What are you looking for?