Answer: You need to show the number line in order to get an answer.
What is the question? Please specific!
Answer:
ha
Step-by-step explanation:
ha
Step-by-step explanation:
We know that tan=sin/cos, so tan(x+π/2)=

Then, we know that sin(u+v)=sin(u)cos(v)+cos(u)sin(v),
so our equation is then
Then, cos(u+v)=cos(u)cos(v)-sin(u)sin(v), so our expression is then

-20 because 40 is a positive and spent is negative