Yeah I’m pretty sure it is a rational number
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

Answer:
20
Step-by-step explanation:
7 times 4 equals 28 and 5 times 4 equals 20 so the answer is 20
Answer:
117.657
Step-by-step explanation:
Line up your decimals take out your decimals and put them in after you solve
769
*153
----------
So if you know long multiplecation then you will find your answer
Good luck hope this helps :)
~Animaljamissofab ♥
Answer:
D: y = 2x - 2
Step-by-step explanation:
1.
= 2
2. y = 2x + b
3. Insert the points into the equation: 8 = 10 + b
4. b = -2
5. y = 2x - 2