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gtnhenbr [62]
4 years ago
14

It takes 8 people yo pull a 16 ton truck how many people would it take to pull a 60 ton truck

Mathematics
2 answers:
erastovalidia [21]4 years ago
4 0
There would be 30 people pulling it. To work it out you do 16 divided by 8=2. Then you do 60 divided by 2= 30.<u />
marishachu [46]4 years ago
3 0
8\ people\ for\ 16\ ton\ truck\\&#10;x\ people\ for \ 60 \ ton\ truck\\\\&#10;proportion:\\&#10;8-16\\&#10;x-60\\\\ cross\ multiplication\\\\&#10;8*60=16x\\\\&#10;480=16x\ \ \ \ | divide\ by\ 16\\\\&#10;x=30\\\\&#10;It\ will\ take\ 30\ people.
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In triangle abc, cos A= -0.6. Find A and Tan A
Tresset [83]

Answer:

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Part 2) tan(A)=-\frac{4}{3}

Step-by-step explanation:

we have

cos(A)=-0.6

The cos(A) is negative, that means that the angle A in the triangle ABC is an obtuse angle and the value of the sin(A) is positive

The angle A lie on the II Quadrant

step 1

Find the measure of angle A

cos(A)=-0.6

using a calculator

A=cos^{-1}(-0.6)=126.87^o

step 2

Find the sin(A)

we know that

sin^2(A)+cos^2(A)=1

substitute the value of cos(A)

sin^2(A)+(-0.6)^2=1

sin^2(A)=1-0.36

sin^2(A)=0.64

sin(A)=0.8

step 3

Find tan(A)

we know that

tan(A)=\frac{sin(A)}{cos(A)}

substitute the values

tan(A)=\frac{0.8}{-0.6}

Simplify

tan(A)=-\frac{4}{3}

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