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3 years ago

In triangle ABC; AB = 5BC = 8 8. and AC = 7 Name the largest angle of triangle ABC

Mathematics

1 answer:

Amiraneli [1.4K]3 years ago

6 0

BCA necau u must add the 3 together

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Solve 5x - c = k for x<br><br> Answers above

Rama09 [41]

Answer:

x = ( k+c)/5

Step-by-step explanation:

5x - c = k

Add c to each side

5x -c+c = k+c

5x = k+c

Divide by 5

5x/5= ( k+c)/5

x = ( k+c)/5

5 0

3 years ago

Read 2 more answers

Can anybody help me please

Alexxandr [17]

Step-by-step explanation:

I think you are clear. You can follow me to get more answers. Thanks.

5 0

3 years ago

Complete the identity

spin [16.1K]

Answer: $cos(\pi-x)=-cos(x)$

Step-by-step explanation:

We need to apply the following identity:

$cos(A - B) = cos A*cos B + sinA*sin B$

Then, applying this, you know that for $cos(\pi-x)$ :

$cos(\pi-x)=cos(\pi)*cos(x)+sin(\pi)*sin(x)$

We need to remember that:

$cos(\pi)=-1$ and $sin(\pi)=0$

Therefore, we need to substitute these values into $cos(\pi-x)=cos(\pi)*cos(x)+sin(\pi)*sin(x)$ .

Then, you get:

$cos(\pi-x)=(-1)*cos(x)+0*sin(x)$

$cos(\pi-x)=-1cos(x)+0$

$cos(\pi-x)=-cos(x)$

8 0

3 years ago

Help please I need answers for these questions

LekaFEV [45]

I think because the angles are corresponding/opposite to each other u equate them to 180°

7 0

3 years ago

Can you guys tell me the answers I need help .

zimovet [89]

Good luck i cant read it tho if i could read it i would help sorry

7 0

3 years ago