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2 years ago

What is trigonometry?

Mathematics

2 answers:

Gala2k [10]2 years ago

8 0

Trigonometry is greek for triangle measurement.

Three of the most basic ideas in trigonometry are the sine, cosine, and tangent ratios. The sine, cosine, and tangent ratios can be defined as follows.

I have attached right triangle ABC in the image attached.

In right triangle ABC, the sine of angle A is equal to the ratio of the length of the side opposite angle A to the length of the hypotenuse. So in right triangle ABC, the sine of angle A equals y over z. The abbreviation we use for sine is sin.

Next, the cosine of angle A is equal to the ratio of the length of the side adjacent to angle A to the length of the hypotenuse. So in right triangle ABC, the cosine of angle A equals x over z. The abbreviation we use for cosine is cos.

Finally, the tangent of angle A is equal to the ratio of the length of the side opposite angle A to the length of the side adjacent to angle A. So in right triangle ABC, the tangent of angle A equals y over x. The abbreviation we use for tangent is tan.

An easy way to remember the sine, cosine, and tangent ratios is to use the word SOH-CAH-TOA.

Sine is opposite over hypotenuse, cosine is adjacent over hypotenuse, and tangent is opposite over adjacent.

dusya [7]2 years ago

5 0

Trigonometry is the study of traingles. It is the geometry of traingles only, where you learn about sines, cosines, and tangents. It comes in high school. Hope this helps :)

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Step-by-step explanation:

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2 years ago

1. Contaminated water is subjected to a cleaning process. The concentration of the

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Answer:

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So if initially, we have 5mg

After one hour, we will have: 5mg - 0.1*5mg = 5mg*(0.9).

After another hour, we will have: 5mg*(0.9) - 0.1*5mg*0.9 = 5mg*(0.9)^2.

And so on, then after n hours, the mass of pollutants will be:

M(n) = 5mg*(0.9)^n

Or we can write this in grams as:

M(n) = 0.005g*(0.9)^n

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2 years ago

The perimeter of a triangle is 140 cm the length of the second side is twice the length of the first side the length of the thir

kykrilka [37]

Perimeter = 140

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Side 2 = 50 cm

Side 3 = 65 cm

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