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oksano4ka [1.4K]
3 years ago
11

How do you simplify cscx*secx-tanx?

Mathematics
1 answer:
kenny6666 [7]3 years ago
5 0
Csc x · sec x - tan x = 
= 1 / sin x · 1 / cos x - sin x / cos x = 
= 1 / sinx cos x - sin² x / sin x cos x = 
= ( 1 - sin² x ) / (sin x cos x) =
=  cos² x / ( sin x cos x ) = 
= cos x / sin x = cot x 
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photoshop1234 [79]
24. 244 cm

25. 65 mm

26. 37/80 or 0.4625

8 0
3 years ago
The length of a rectangle is six times its width.
Hoochie [10]

Answer:

Length = 30

Width = 5

Step-by-step explanation:

So the formula for perimeter is

P = 2L+2W

And we know that:

L = 6W

So then we put in all the information that we do know

70 = 2(6W)+2W

And pop that into a calculator and you get W=5

So now we put that information into L = 6W to get:

L = 6×5

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3 years ago
50 POINTS. PLEASE HELP!!! NEED THIS DINE BY 4:00 PM!!!!
malfutka [58]

Hey fellow Army.

So because JKLM=PQRS, that means that all the line segments are equal.

JK=PQ=6.4

KL=QR=13

LM=RS=9

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Okay now for the graph.

It was first reflected over the y axis, and then shifted over vertically by 9 .

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4 0
3 years ago
Read 2 more answers
A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic ca
Ugo [173]

Answer: A. 664

Step-by-step explanation:

Given : A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic cable TV service.

But there is no information regarding the population proportion is mentioned.

Formula to find the samples size , if the prior estimate to the population proportion is unknown :

n=0.25(\dfrac{z*}{E})^2

, where E = Margin of error.

z* = Two -tailed critical z-value

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Margin of error = 0.05

Then, the minimum sample size would become :

n=0.25(\dfrac{2.576}{0.05})^2

Simplify,

n=0.25\times2654.3104=663.5776\approx664

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Hence, the correct answer is A. 664.

5 0
3 years ago
How Can I Use Decimal Grids to model Tenths?
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3 years ago
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