profile-img
Chakravarthi G S posted an Question
June 02, 2020 • 13:30 pm 30 points
  • IIT JAM
  • Mathematics (MA)

Kindly explain those two steps

2 Answer(s) Answer Now
  • 0 Likes
  • 2 Comments
  • 0 Shares
  • Priyadarshan Choursiya Best Answer

    sin(π-2X) = sin2x, this is property. cos (π/4) = sin(π/4) = 1/√2. so apply sin(a+b) property here we put X= π/4 -t so angle in last term can make @=π/4+π/4-t. so sin@ changes into cost. ( which is required)

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers