Answer:

Step-by-step explanation:
We know that:

And we want to find:

Remember that there is a trigonometric identity that relates the
function with the
function

Then if
this means that:

Finally:

Answer:
A
Step-by-step explanation:
Can't have 0 in the denominator
All it is adding add both of the numbers that are on the top and then do the same
Answer:can you give me more detail
Step-by-step explanation: