Question

In triangle ABC, cos A = 7/25. Which other expression has a value of 7/25A) sin BB) tan BC) cos BD) tan A ?

Answer 1

The given trigonometric ratio in the question is

`\begin{gathered} \cos A=(7)/(25) \\ adjacent=7 \\ hypotenus=25 \end{gathered}`

Concept:

To solve the question, we will use the triangle below

Hence,

The trigonometric ratio we are going to use will be

`\begin{gathered} \sin B=(opposite)/(hypotenus) \\ opposite=7 \\ hypotenus=25 \end{gathered}`

By substituting the values, we will have

`\begin{gathered} \sin B=(oppos\imaginaryI te)/(hypotenus) \\ \sin B=(7)/(25) \end{gathered}`

Hence,

The final answer is

`\Rightarrow sinB`

OPTION A is the right answer