Answer:
A
Step-by-step explanation:
We know that identity:
cos^2x+sin^2x=1.
From that we have:
cos^2x=1-sin^2x.
So it is:
cos^2x-sin^x=(1-sin^2x)-sin^2x=1-2sin^2x.
And this is A).
B) is not treu because cos^2 is not sin^2x+1
C) is not true because cos^2x-sin^x=1 is false.
D) is not treu because cos^2x is not sin^2x-1
Answer:
Option B is correct.
Step-by-step explanation:
We need to find the value of S in cos S = 0.9092
cos S = 0.9092
To find value of S we will find cos^-1(0.9092) i.e
S = cos^-1 (0.9092)
S = 24.6 °
So, the measure of the angle to the nearest tenth of a degree of cos S = 0.9092 is 24.6°
So, Option B is correct.
Solve out
x^2 + 64 = 0
x^2 = -64 ( we are going to use imaginary numbers to solve)
x =
x = 8i, -8i final answers
Answer:
9514 1404 393
Answer:
C The unit rates are the same.
Step-by-step explanation:
The rate of change for the equation is the coefficient of x: 4.5.
The rate of change for the table is computed as described in the problem statement:
unit rate of change = ∆y/∆x = (18-9)/(4 -2) = 9/2 = 4.5
The unit rates are the same.
Step-by-step explanation:
