Answer:
Step-by-step explanation:
If both sides of an equation do not equal each other, then the equation is false.
Answer:area=l×b
10×8=80cm* 2
perimeter =(l+b)2
10+8)*2
18×2
=36cm
Step-by-step explanation:
Answer:
438.25
Step-by-step explanation:
A=2 π r h+2 π r^2=2×π×4.5×11+2×π×4.5^2≈438.25218
Answer: The first option.
Step-by-step explanation:
1. You need to remember that:
- An even function is a function with the following property:
f(-x)=f(x)
- An odd function is a function with the following property:
f(-x)=-f(x)
2. By definition, the contangent is an odd function, therefore you have that:
cot(-θ)=-cot(θ)
Then:
3. So, you can coclude that the first step is wrong. Therefore, the answer is the first option.
x squared hope this helps