Ask Question
16 January, 08:04

Prove identity: sin2x-tanx=cos2xtanx

+1
Answers (1)
  1. K
    16 January, 09:58
    0
    See below.

    Step-by-step explanation:

    sin2x-tanx

    = 2sinx cosx - sinx/cos

    = (2sinx cos^2x - sin x) / cos x

    = sinx (2 cos^2x - 1) / cos x

    Now sin x / cos x = tanx and 2 cos^2 x - 1 = cos2x

    so this simplifies to cos2x tan x.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Prove identity: sin2x-tanx=cos2xtanx ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers
Sign In
Ask Question