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VikaD [51]
2 years ago
6

Can y'all help me prove the identity tan^2(Y)= 1−cos^2(Y)/cos(Y)

Mathematics
1 answer:
Thepotemich [5.8K]2 years ago
6 0

Answer:

Step-by-step explanation:

LHS=tan^2(Y)

SEC^2(Y)-1

1/COS^2(Y)-1

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What is the graph of the polynomial function
Nitella [24]
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Draw another set of coordinate axes and place dark dots at (0,0), (3,0) and (-4,0).  These dots represent the roots (solutions) of the given polynomial.
Note that we have a repeated (double) root at x=3, which is given away by the exponent 2 of (x-3).

A basic way of sketching this graph is described as follows:

Evaluate the function (find y) for several x-values other than (0, 3 and -4):
Choose (for example) {-5, -2, -1, 1, 2, 4}

If you'll find the y-value for each of these x-values and plot the resulting points, you should see the shape of the graph.  Draw a rough graph thru these points.  If any doubt remains about what the graph looks like at particular x-values, calculate and plot more points, e. g., at {-2.5, -1.5, ...}.

If you're taking calculus, consider applying the First- and Second-Derivative tests to determine concavity, maximum, minimum, etc.

5 0
3 years ago
Which value of x from the set {4, 5, 6, 7}, makes this equation true? 4(8 − x) = 8
vekshin1
4(8 - x) = 8, 32 - 4x = 8, -4x = -24, So x = 6
8 0
3 years ago
Read 2 more answers
Find the percent of discountOriginal price Sale Price<br> $60 <br> % $45
qwelly [4]

Answer:

25% Discount

Step-by-step explanation:

find the percent of discountOriginal price Sale Price

$60

% $45 =

$60 was the SP

$45 is the MP

discount = 60/45 * 100 = 75

100 - 75 = 25%

8 0
2 years ago
Question 17 of 25
Brilliant_brown [7]

Answer:

c

Step-by-step explanation:

y = \frac{5}{2} x + 2 → (1)

2y = 5x + 4 ( divide through by 2 )

y = \frac{5}{2} x + 2 → (2)

the 2 equations are the same and will have infinitely many solutions

3 0
2 years ago
PLEASE HELP ASAP!!!!
Veseljchak [2.6K]

Answer:

Step-by-step explanation:

R(0,0)

A=((0+2a)/2,(0+2b)/2)=(a,b)

S(2a,2b)

B=((2a+2c)/2,(2b+2d)/2)=(a+c,b+d)

T(2c,2d)

C=((2c+2c)/2,(2d+0)/2)=(2c,d)

V(2c,0)

D=((2c+0)/2,(0+0)/2)=(c,0)

R(0,0)

slope of AB=(b+d-b)/(a+c-a)=d/c

slope of DC=(d-0)/(2c-c)=d/c

slope of AD=(0-b)/(c-a)=-b/(c-a)

slope of BC=(d-b-d)/(2c-a-c)=-b/(c-a)

7 0
3 years ago
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