3 years ago

Someone plz help me giving brainliest

Mathematics

1 answer:

sukhopar [10]3 years ago

7 0

Answer:

1/14

Step-by-step explanation:

1 - 5/7 = 7/7 - 5/7 = (7-5)/7

Subtract. 7 - 5 = 2

= 2/7

Now we have to multiply 2/7 and 1/4

We get 2/7 x 1/4 = 1/14

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Consider a Triangle ABC like the one below. Suppose that C = 98, A = 74, and b = 11 (figure is not drawn to scale.) solve the tr

Degger [83]

Answer:

$A=73.8\°$

$B=8.2\°$

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Step-by-step explanation:

step 1

Find the measure of side c

Applying the law of cosines

$c^{2}= a^{2}+b^{2}-2(a)(b)cos(C)$

substitute the given values

$c^{2}= 74^{2}+11^{2}-2(74)(11)cos(98\°)$

$c^{2}=5,823.5738$

$c=76.3\ units$

step 2

Find the measure of angle A

Applying the law of sine

$\frac{a}{sin(A)}=\frac{c}{sin(C)}$

substitute the given values

$\frac{74}{sin(A)}=\frac{76.3}{sin(98\°)}$

$sin(A)=(74)sin(98\°)/76.3$

$A=arcsin((74)sin(98\°)/76.3)$

$A=73.8\°$

step 3

Find the measure of angle B

we know that

The sum of the internal angles of a triangle must be equal to 180 degrees

$A+B+C=180\°$

substitute the given values

$73.8\°+B+98\°=180\°$

$171.8\°+B=180\°$

$B=180\°-171.8\°=8.2\°$

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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the answer is 120 bc 140 is adjacent to it and 140-20 = 120

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3 years ago

Read 2 more answers