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Korolek [52]
2 years ago
15

Need help pleaseeeee!!

Mathematics
1 answer:
antiseptic1488 [7]2 years ago
6 0

Answer: z 1/2

Step-by-step

:) 100%

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Write each expression in terms of sines and/or cosines and then simplify.
Sedaia [141]
Tan(x)= sin(x)/cos(x), therefore, substitute sin(x)/cos(x) in the expression:
=(cos(x)(sin(x)/cos(x))-1)/cos^2(x)
simplify the 2 cos(x):
=(sin(x)-1)/cos^2(x)
Sin^2(x)+ cos^2(x)=1, sin^2(x)-1=- cos^2(x), substitute in the expression:
= -cos^2(x)/cos^2(x)= -1
8 0
3 years ago
The point LaTeX: \left(-1,\:5\right)( − 1 , 5 ) is the solution for the following system of equations
balu736 [363]
I think right is correct ( - 1, 5 )
4 0
3 years ago
??????????????????????????
Zinaida [17]

Answer:

D

Step-by-step explanation:

A)

3(2) + 4(-2) = -2                    2(2)-4(-2) = -8

6 - 8 = -2                              4 + 8 = -8

Correct                                 Incorrect  

B)

3(6) + 4(-5) = -2                    2(6) - 4(-5) = -8  

18 - 20 = -2                            12 + 20 = -8

Correct                                 incorrect

C)

3(4) + 4(4) = -2

12 + 8 = -2

incorrect

D)

3(-2) + 4(1) =-2                        2(-2) - 4(1) = -8

-6 + 4 = -2                                 -4 - 4 = -8

Correct                                      Correct

Best way is process of elimination

5 0
2 years ago
A cone has a volume of 226.08 cubic millimeters and a height of 6 millimeters. What is its
dezoksy [38]

Answer:

r≈5.36656314

Step-by-step explanation:

Since A=πr(r+\sqrt{h^2+r^2}) so we get that 226.08/pi≈72 or 226.08/3.14=72 we then plug it in to get 72=r(r+\sqrt{36+r^2}) so we get r≈5.36656314

6 0
3 years ago
Read 2 more answers
Divide these numbers.<br><br> 18 ÷ 4
irakobra [83]

Answer:

4.5

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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