College of Admission Tests Multan

Fundamentals and Basic Identities

Solve the question of and select the option from the choices A through D/E. Check your Answer and view the explanation.

Question: 3

c o t ( x ) ⋅ t a n ( x ) c o s ( x )
  • cos ⁡ ( x ) × tan ⁡ ( x )
  • cot ⁡ ( x ) / s e c ( x )
  • cos ⁡ ( x )
  • sec ⁡ ( x )
  • csc ⁡ ( x )

  Show/Hide Explanation 

Correct Answer: D

cot ⁡ ( x ) × tan ⁡ ( x ) = 1

and

1 / ( cos ⁡ ( x ) ) = sec ⁡ ( x )