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OLEGan [10]
2 years ago
6

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

Mathematics
1 answer:
Montano1993 [528]2 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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2 years ago
A cube has a side length of 8 inches.
Kazeer [188]

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Explanation:

The volume of a cube or space a cube occupies is calculated by multiplying the length, height, and width. Additionally, because in a cube all sides are equal in length, the formula for volume is V= s^{3}. According to this, if the side length is 8 inches the volume can be represented as V = 8^{3} or V= 8 · 8 · 8 because the symbol · represents multiplication. Also, this can be solved as V = 512 cubic inches. This makes the following options correct:  8^{3} and 8 · 8 · 8.

4 0
3 years ago
Circle T has diameters RP and QS. The measure of ∠RTQ is 12° less than the measure of ∠RTS.
Rufina [12.5K]

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96 degrees

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STR + STQ=180 degree

Substitute

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3 0
3 years ago
Read 2 more answers
Tell whether the ratios are equivalent: 3 days to 4 hours and 9 days to 12 hours. show your work.
bonufazy [111]

Answer:

yes.

Step-by-step explanation:

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5 0
3 years ago
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