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STatiana [176]
3 years ago
10

Mick wants to design a new escalator for a company. The vertical distance from the first floor to the second floor is 28 feet. T

he escalator should make an angle of 35° with the ground. What will be the total length of the escalator to the nearest foot?
A.49 feet
B.52 feet
c. 63 feet
D. 39 feet
Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
8 0
I would say 63 deer because 35 + 28 is close to being 65 so idk but I’m gonna say it’s 63 feet
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Answer:

slope of the line containing the given points (6,-1) AND (5,-7) is 6

point- slope form of the equation is

(y+1)= 6(x-6)  ( because, i'm choosing the point (6,-1)

Step-by-step explanation:

slope = (-7 + 1) / (5 - 6 ) = -6/-1 = 6

(y-y1) = m ( x - x1)

(y+1 ) = 6 ( x-6)

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2 years ago
if a and b are acute angles such that sinA=4/5 and cosB=12/13, calculate, without using tables: sin(a-b)
kolbaska11 [484]
\sin \alpha = \frac{4}{5} \\ \cos \alpha  =  \sqrt{1-\sin^2 \alpha }= \sqrt{1- \frac{16}{25} }   = \sqrt{ \frac{9}{25} }= \frac{3}{5} \\    \\ \cos \beta = \frac{12}{13}  \\  \sin \beta  =  \sqrt{1-\cos^2  \beta }= \sqrt{1- \frac{144}{169} }   = \sqrt{ \frac{25}{169} }= \frac{5}{13}


\\  \\ \sin (\alpha- \beta ) =\sin \alpha \cos \beta -\cos \alpha \sin \beta = \frac{4}{5}\times \frac{12}{13}-   \frac{3}{5}\times \frac{5}{13} =  \frac{48}{65}- \frac{15}{65}=  \frac{33}{65}

Answer:
sin(α-β) = 33/65
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Darya [45]

you need to reword that it doesnt even make senseStep-by-step explanation:

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Marizza181 [45]

Answer:

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Step-by-step explanation:

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1 Answer:
Fudgin [204]

Answer:

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Step-by-step explanation:

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