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OLEGan [10]
3 years ago
6

In a right triangle ABC, C is the right angle. What does cosB equal?

Mathematics
1 answer:
Montano1993 [528]3 years ago
8 0

Given that,

ABC is a right angle triangle, C is the right angle.

To find,

cosB = ?

Solution,

The sum of angle of a triangle is equal to 180 degrees. So,

∠A + ∠B + ∠C = 180°

Put ∠C = 90°

∠A + ∠B + 90° = 180°

∠A + ∠B = 90°

Taking cos with each term.

cosA+cosB = cos (90)

cosA+cosB = 0

cosB=-sinA

Hence, cosB = sinA.

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<h2>Answer:</h2>

The graph is shown in the Figure below

<h2>Step-by-step explanation:</h2>

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fenix001 [56]
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6 0
4 years ago
What is the improper fraction 17/10 as a decimal
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4 0
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exis [7]

Answer:

b^{\frac{6}{7}}  is the required expression.

Step-by-step explanation:

(b^2)^{\frac{3}{7}}\\\\\mathrm{Apply\:exponent\:rule:\:}\left(a^b\right)^c=a^{bc},\:\quad \mathrm{\:assuming\:}a\ge 0\\\\=b^{2\cdot \frac{3}{7}}\\\\=b^{\frac{6}{7}}

Best Regards!

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stiks02 [169]

Answer:

The second one would be the correct option.

Step-by-step explanation:

The guy above is wrong, the second one is right, I took the assignment.

The guy above is right for the answer on number eight though because there are two of these types of questions asked on this same assignment. I think he got the two questions mixed up, but for question eight he is right, but for question five the second graph is the correct answer.

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