Beyond NumeracyFrom the author of the national bestseller Innumeracy, a delightful exploration and explanation of mathematical concepts from algebra to zero in easily accessible alphabetical entries. "Paulos . . . does for mathematics what The Joy of Sex did for the boudoir. . . ."--Washington Post Book World. First time in paperback. |
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Page 252
... angle A is ; tan ( A ) = The sine of angle A is = ; sin ( A ) = . The cosine of angle A is ៖ b ; cos ( A ) = b . The most common trigonometric functions More generally , the tangent of an acute angle ( less than 90 degrees ) in a right ...
... angle A is ; tan ( A ) = The sine of angle A is = ; sin ( A ) = . The cosine of angle A is ៖ b ; cos ( A ) = b . The most common trigonometric functions More generally , the tangent of an acute angle ( less than 90 degrees ) in a right ...
Page 253
... angle to the hypotenuse ( the side opposite the right angle ) , whereas the cosine of an angle is the ratio of the side adjacent to the angle to the hypote- nuse . In the case of a 45 - degree angle the sine and cosine are equal , both ...
... angle to the hypotenuse ( the side opposite the right angle ) , whereas the cosine of an angle is the ratio of the side adjacent to the angle to the hypote- nuse . In the case of a 45 - degree angle the sine and cosine are equal , both ...
Page 255
... angle added to the square of the cosine of that same angle always equals 1 . Checking this with the values mentioned earlier , we see that for a 45- degree angle .712 + .712 = 1 , and for a 20 - degree angle .342 + .942 1 . I end with a ...
... angle added to the square of the cosine of that same angle always equals 1 . Checking this with the values mentioned earlier , we see that for a 45- degree angle .712 + .712 = 1 , and for a 20 - degree angle .342 + .942 1 . I end with a ...
Contents
A Mathematical Accent | 3 |
Analytic Geometry | 10 |
Areas and Volumes | 18 |
Copyright | |
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