Answer:
Option C.
Step-by-step explanation:
By definition, a function f(x) is even if
We know by definition that the function sin(x) is odd and the function cos(x) is even.
With this information we can analyze each function and find out which is even.
A. The first function is not even because 5sin(x) is an odd function.
B. The second function is not even because 2tan(x) is not an even function.
C. The third function is even, because -cos(x) and are even functions.
D. The fourth function is not even because csc(x) is not an even function.
Therefore the correct answer is the option C.
The sum is the total of two numbers. For example, the sum of 2 and 3 is 5
Answer:10
Step-by-step explanation:
Each exterior angle is (3x + 6)°
A decagon has 10 sides
Each exterior angle=360/n
n=number of sides
3x+6=360/10
Cross multiply
10(3x + 6)=360
30x+60=360
Collect like terms
30x=360-60
30x=300
Divide both sides by 30
30x/30=300/30
x=10
Answer:
300m meters
Step-by-step explanation:
multiply length value by 1000