Question

Simplify the expression.

Cos x csc x tan x
a.
-1
c.
1
b.
0
d.

Answer 1

Choice C

• 1

Explanation:

Appropriate Question:

• cos x * csc x * tan x

Solution:

Rewrite csc x as

• cos x * 1/sin(x) * tan x

Solving through the laws:

• 
  `\cfrac{ \cos(x) }{ \sin(x) } * \tan(x)`

• 
  `\cfrac{ \cos(x) }{ \sin(x) } * \cfrac{ \sin(x)}{ \cos(x)}`

Canceling them;we have

• 
  `\cfrac{ \cancel{ \cos(x)} }{ \cancel{ \sin(x)} } * \cfrac{ \cancel{\sin(x)}}{ \cancel{ \cos(x)}}`

• 
  `\boxed{1}`

Choice C is accurate.

Answer 2

1

Explanation:

See attached image for explanation.