Answer:
Step-by-step explanation:
I believe that what you want to do here is to "differentiate" cos (2x - 1).
We must use the rule for differentiating cos x and also the chain rule, since the input to cos x here is (2x - 1).
(d/dx) is the derivative operator.
(d/dx) (cos x) = -sin x
(d/dx) cos (2x - 1) = - sin (2x - 1) * (d/dx) (2x -1) = -sin (2x - 1)(2) = -2sin (2x - 1)
Answer:tan (7pi/8) = -4.4142
Explanation:The tangent half-angle formula is shown in the attached image
We have:
alpha = 7pi / 8
alpha/2 = 7pi / 16
Substitute in the formula with the alpha and alpha/2 as follows:tan (7pi/8) = [2tan(7pi / 16)] / [1 - tan(7pi / 16)tan(7pi / 16)]
tan (7pi/8) = -4.4142
Hope this helps :)
Solve for hypotenuse
Hypotenuse =
Substitute 3 for A and 4 for B
Solve exponents
3^2 = 9
4^2 = 16
Add
9 + 16 = 25
Solve square root
= 5
5 is your answer
Answer:
A
Step-by-step explanation:
divide 1125 by 30
hope this helps
Answer:
Two zeros are 17 and -5
Step-by-step explanation:
Given:
f(x) = x² - 12x - 85
Find:
Zeros of the function
Computation:
f(x) = x² - 12x - 85
f(x) = x² - (17 - 5)x - 85
f(x) = x² - 17x + 5x - 85
f(x) = x(x - 17) + 5(x - 17)
f(x) = (x - 17) (x + 5)
So,
x - 17 = 0 , x + 5 = 0
So,
x = 17 , x = -5
Two zeros are 17 and -5