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lubasha [3.4K]
3 years ago
12

Right Triangle ABC has its right angle at C, BC = 4, and AC= 8.

Mathematics
1 answer:
ra1l [238]3 years ago
7 0

9514 1404 393

Answer:

 cos B = (√5)/5

  csc B = (√5)/2

  tan A = 1/2

Step-by-step explanation:

The length of hypotenuse AB is given by the Pythagorean theorem:

  AB² = AC² +BC²

  AB² = 8² +4² = 64 +16 = 80

  AB = √80 = 4√5

The mnemonic SOH CAH TOA can help you remember the needed ratios.

  Cos = Adjacent/Hypotenuse

  cos B = BC/AB = 4/(4√5)

  cos B = (√5)/5

__

  Sin = Opposite/Hypotenuse

  csc = 1/sin = Hypotenuse/Opposite

  csc B = AB/AC = (4√5)/8

  csc B = (√5)/2

__

  Tan = Opposite/Adjacent

  tan A = BC/AC = 4/8

  tan A = 1/2

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3 years ago
R^2+3r+5-r^3/r is a quadratic/cubic/linear polynomial?
Sergeu [11.5K]

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S<u>tep-by-step explanatio</u>n:

based on the highest power of the variables of a polynomial, it can be classified as linear,polynomial, quadratic polynomial,cubic polynomial etc.

In a linear polynomial, the highest power of the variable is 1. The general form of a linear polynomial is ax+b

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Take the given question and simplify it

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3 0
3 years ago
Find the magnitude of the vector from the origin to (8. - 6) and write the vector as the sum of unit vectors.
Kay [80]

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The unit vector in of the vector from the origin as   (8/10, -6/10

<u>Step-by-step explanation:</u>

<u>1.Finding the magnitude,</u>

we have the formula,

magnitude=√a²+b²

we have the values as a=8 and b=-6

Finding the magnitude we get,

magnitude=√a²+b²

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The magnitude of the vector from the origin is 10

<u>2.Finding the  unit vector</u>

Divide by the magnitude

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The unit vector in of the vector from the origin as   (8/10, -6/10

3 0
3 years ago
URGENT GEOMETRY!!
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Answer: 140 degrees

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plzzzz mark this as brainliest... and I hope this helped :)

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