# How to Find a Cosine on a Calculator?

Using cosine on a calculator saves a lot of time compared to looking it up in a table, which people did before calculators. Cosine comes from a part of mathematics called trigonometry, which deals ... Read More »
http://www.ehow.com/how_8113118_cosine-calculator.html

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## How to Calculate the Value of Sine,Cosine and Tangent Without a Calculator?

Annoyed with remembering the trigonometry tables? You can calculate it with just a ruler and a semi-circle ruler that shows angles.
http://www.wikihow.com/Calculate-the-Value-of-Sine%2CCosine-and-Tangent-Without-a-Calcu...

## How to Find Sine & Cosine Ratios?

The sine and cosine functions in trigonometry represent the ratio between two sides of a right triangle as it relates to a particular angle. Calculating these ratios can help you find unknown lengt... Read More »
http://www.ehow.com/how_8232574_sine-cosine-ratios.html

## How to Find Sine, Cosine, Tangent and Cotangent?

Sine, tangent, cotangent and cosine are all functions when dealing with right triangles. Sine, tangent and cosine are the primary functions of trigonometry. When you see these functions in trigon... Read More »
http://www.ehow.com/how_8213257_sine-cosine-tangent-cotangent.html

## Where do I find the calculator on my PC?

If you have Windows XP click Start and go to All Programs, then click on Accessories and it's on that drop down list. You can make the caculator basic or scientific by changing the options on the ... Read More »

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