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Anika [276]
3 years ago
15

Using the following triangle, what is the cosine of angle B?

Mathematics
1 answer:
stealth61 [152]3 years ago
3 0

Hello!

To find cosine, use the formula cos = adjacent / hypotenuse.

According to angle B, adjacent of angle B is side A, and the hypotenuse is side c because the hypotenuse is always opposite the right angle.

Therefore, the cosine of angle B is a/c.

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Solve. −815x=2.24 Enter your answer as a mixed number in simplest form in the box. x =
lutik1710 [3]

x=2.7 x 10*-3

Step-by-step explanation:

-815x=2.24

x=-2.24/815

x=2.7 x 10*-3

3 0
3 years ago
When a dice is rolled find the probability of getting a number less than or equal to 6
Dahasolnce [82]

Answer:

100% probability right?

Step-by-step explanation:

a dice only has 6 sides

7 0
2 years ago
HELP ASAP TIMED !!!! What is the exact value of cos(c + d), given Sine c = StartFraction 24 Over 25 EndFraction for c in Quadran
Keith_Richards [23]

9514 1404 393

Answer:

  D

Step-by-step explanation:

In the second quadrant, ...

  c = 180° -arcsin(24/25) ≈ 106.26°

In the third quadrant, ...

  d = 360° -arccos(-3/4) ≈ 221.41°

Then cos(c+d) = cos(327.67°) ≈ 0.84498

This is a positive irrational number, greater than 21/100, so the only reasonable choice is the last one:

  \dfrac{21+24\sqrt{7}}{100}\approx 0.84498

_____

Perhaps you want to work this out using the trig identities.

  cos(c) = -√(1 -sin(c)²) = -7/25

  sin(d) = -√(1 -cos(d)²) = -(√7)/4

Then the desired cosine is ...

  cos(c+d) = cos(c)cos(d) -sin(c)sin(d)

  cos(c+d) = (-7/25)(-3/4) -(24/25)(-√7/4)

  cos(c+d) = (21 +24√7)/100 . . . . matches choice D

8 0
3 years ago
Ahmet'in boyu 183 cm'dir.
babunello [35]

Answer:

Ahmet'in boyu 183cm emel de 27cm ahmetden uzun ise 183 ile 27 toplaman lazım

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5 0
2 years ago
Plz someone help. Urgent homework.
Arlecino [84]

Answer:

1

Step-by-step explanation:

4 0
3 years ago
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