3 years ago

86,678 rounded the nearest ten thousand

Mathematics

1 answer:

Sunny_sXe [5.5K]3 years ago

7 0

90,000 is the answer. have a great day!!

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olga2289 [7]

$f=\frac{9}{5}c+32\\
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3 years ago

In triangle abc, cos A= -0.6. Find A and Tan A

Tresset [83]

Answer:

Part 1) $A=126.87^o$

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

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

5 0

3 years ago

PLEASE HELP!!!!! HURRY

svp [43]

Its c first find area of the whole thing with piece cut out.(240) then of the cut out piece (12) 240-12=228 C

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3 years ago

Really confused on question 30.

Andreas93 [3]

The answer is 2,000

hoped I helped :)

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3 years ago

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Natasha_Volkova [10]

Answer:

Step-by-step explanation:

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3 years ago