Q31 of 35 Page 3

Prove that  


  =

  

  =   cot3x

  =   R.H.S

Hence proved

More from this chapter

All 35 →
29

30
Prove that =2sinx

32
cot x cot 2x – cot 2x cot3x – cot3x cotx =1

33
tan4x =