Question

For Triangle ABC, which one is equivalent to sin(A)?

cos(B)

sin(B)

cos(C)

tan(c)

Answer 1

The diagram accompanying the question is missing, I found a possible matching diagram, and it is attached to this answer.

The correct answer is:

Cos(C)

Explanation:

First of all not the following:

Sin(θ) =
`(opposite)/(hypotenous)`

Cos(θ) =
`(Adjacent)/(hypotenous)`

Tan(θ) =
`(opposite)/(adjacent)`

From the diagram:

Sin(A) =
`(BC)/(AC)`

similarly,

Cos(C) =
`(BC)/(AC)`

Therefore, Sin(A) = Cos(C)