Ask a New Question
Menu

Prove the identity

(sinx+cosx)^2 = 1+sin2x

Thank you

1 answer

(sinx+cosx)^2 = sin^2 x + 2 sinx cosx + cos^2 x

now recall the most fundamental of your trig identities, and the double-angle formulas.
Similar Questions
  1. prove identitySin2x - sinx/cosx + cos2x= sinx/cosx + 1
    1. answers icon 1 answer
  2. Prove the identity((Cos²x - sin²x) ÷ (cosx + sinx) ) + sinx
    1. answers icon 1 answer
  3. Verify the identity:tanx(cos2x) = sin2x - tanx Left Side = (sinx/cosx)(2cos^2 x -1) =sinx(2cos^2 x - 1)/cosx Right Side = 2sinx
    1. answers icon 0 answers
  4. 1. Prove the identity:cosx/1-tanx+sinx/1-cotx=sinx+cosx2.Prove the identity: cosx/1+sinx+1+sinx/cosx=2secx
    1. answers icon 0 answers
more similar questions