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Kazeer [188]
3 years ago
11

Solve AABC. Round your answers to the nearest hundredth, if necessary

Mathematics
1 answer:
Aloiza [94]3 years ago
8 0

Answer:

C=25^{\circ},\\a\approx 10.72,\\b\approx 11.83

Step-by-step explanation:

The sum of the interior angles of a triangle is 180 degrees. Thus, angle C must be 180-90-65=25^{\circ}.

In any triangle, the Law of Sines is given by \frac{\sin A}{a}=\frac{\sin B}{b}=\frac{\sin C}{c}.

Therefore, we have:

\frac{\sin 90^{\circ}}{b}=\frac{\sin 25^{\circ}}{5},\\\\b=\frac{5\sin90^{\circ}}{\sin 25^{\circ}}=11.8310079158\approx \boxed{11.83}

\frac{a}{\sin 65^{\circ}}=\frac{5}{\sin25^{\circ}},\\a=\frac{5\sin 65^{\circ}}{\sin25^{\circ}}=10.7225346025\approx \boxed{10.72}

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Write the equation of the line that passes through the points (7,-4)and (−7,1). Put your answer in fully reduced point-slope for
Alika [10]

9514 1404 393

Answer:

  y +4 = -5/14(x -7)

Step-by-step explanation:

The slope can be found using the slope formula:

  m = (y2 -y1)/(x2 -x1)

  m = (1 -(-4))/(-7-7) = 5/-14 = -5/14

The point-slope form is ...

  y -k = m(x -h) . . . . . line with slope m through point (h, k)

Filling in the given values, we have ...

  y +4 = -5/14(x -7)

7 0
3 years ago
Which statement is false?
Sidana [21]

Trigonometric functions which are related by having the same value at complementary angles are called cofunctions. Cofunctions of complementary angles are equal.

A. csc 20' = csc(90-70)=sec 70

B. cos 87' =  cos (90-3)=sin 3'

C. csc 40' =  csc(90-50) =sec50'  


D. tan 15' = tan(90-75)= cot 75'

Among all the option  c is not correct.

Option C is false.




8 0
3 years ago
Read 2 more answers
A gardener installed 42.6 meters of fencing in a week. He installed 13.45 meters on Monday and 9.5 meters on Tuesday . He instal
kvasek [131]
6.55 meters of fencing. Simply subtract 13.45 meters and 9.5 meters from 42.6 meters, and then divide by 3.

8 0
3 years ago
Dominic has 12 children. he bought pizza for his kids. If each child ate 1/3 of pizza, how many pizzas did Dominic need to buy
Kazeer [188]

Answer:

  4

Step-by-step explanation:

If each of 12 kids ate 1/3 of a pizza, the amount eaten was ...

  12 × 1/3 pizza = 12/3 pizza = 4 pizza

Dominic needed to buy 4 pizzas.

7 0
2 years ago
The bottom of a doorway to a building is 3.45 feet above the ground, and a ramp to the door for the disabled is at an angle of 6
Darya [45]

Answer:

The ramp should be 32.9 feet longer.

Step-by-step explanation:

When the ramp is at 6^{o} to the ground, its length can be determined by applying the appropriate trigonometric function. Let the length be represented by l, so that;

Sin θ = \frac{opposite}{hypotenuse}

Sin 6^{o} = \frac{3.45}{l}

l = \frac{3.45}{Sin 6^{o} }

 = \frac{3.45}{0.10453}

 = 33.0048

l = 33.0 feet

When the angle is reduced to 3^{o}, the length of the ramp would be;

Sin θ = \frac{opposite}{hypotenuse}

Sin 3^{o} = \frac{3.45}{l}

l = \frac{3.45}{Sin 3^{o} }

 = \frac{3.45}{0.05234}

= 65.9152

l = 65.9 feet

Change in length of ramp = 65.9 - 33.0

                            = 32.9

The ramp should be 32.9 feet longer.

5 0
3 years ago
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