Question

Verify that cscθ cosθ tanθ =1

Answer 1

cos=-0 cos=0 verify it and it’s right

Answer 2

TO VERIFY :-

• 
  `\csc \theta * \cos \theta * \tan \theta = 1`

GENERAL TRIGONOMETRIC FORMULAES :-

• 
  `\csc \theta = (1)/(\sin \theta)`.
• 
  `\tan \theta = (\sin \theta)/(\cos \theta)`

SOLUTION :-

L.H.S. =

`\csc \theta * \cos \theta * \sin \theta`

`=> (1)/(\sin \theta) * \cos \theta * (\sin \theta)/(\cos \theta)`

`=> (\sin \theta * \cos \theta)/(\sin \theta * \cos \theta)`

`=> 1`

R.H.S. = 1

∴ L.H.S. = R.H.S. (Proved)