0

Guest

Courses New

(sin θ - 2sin3θ)/(2cos3θ-cos θ) = tan θ prove the following

(sin θ - 2sin3θ)/(2cos3θ-cos θ) = tan θ
 
prove the following

Grade:12

1 Answers

Vikas TU
14149 Points
3 years ago
Dear student 
(sin θ - 2sin3θ)/(2cos3θ-cos θ) = tan θ
L.H.S. = (sin θ - 2sin3θ)/(2cos3θ - cos θ)
           = [sin θ(1 - 2sin2θ)]/[cos θ(2cos2θ- 1)]
           = sin θ[1 - 2(1-cos2θ)]/[cos θ(2cos2θ -1)]
          = [sin θ(2cos2θ -1)]/[cos θ(2cos2θ -1)]
          = tan θ = R.H.S.

Think You Can Provide A Better Answer ?

Other Related Questions on Trigonometry

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More