Plane TrigonometryLongmans, Green, and Company, 1906 |
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Page vi
... namely , the solution of triangles and the associated practical problems , is concluded before the more general and abstract portions of the study are introduced . The first chapters of the book contain little more about trigonometric ...
... namely , the solution of triangles and the associated practical problems , is concluded before the more general and abstract portions of the study are introduced . The first chapters of the book contain little more about trigonometric ...
Page 21
... namely : MP AM MP AM AP AP AP -9 AP AM MP AM MP It is shown in Art . 13 that each of these ratios has the same value as in Fig . 2 , no matter where the point P is taken on either one of the lines bounding an angle which is equal to A ...
... namely : MP AM MP AM AP AP AP -9 AP AM MP AM MP It is shown in Art . 13 that each of these ratios has the same value as in Fig . 2 , no matter where the point P is taken on either one of the lines bounding an angle which is equal to A ...
Page 27
... namely , the triangle in which " the side adjacent to the angle is to the hypote- nuse in the ratio 2 : 3. " Thus the lengths of this side and hypotenuse can be taken as 2 and 3 , 6 and 9 , 200 and 300 , and so on . Taking the lengths 2 ...
... namely , the triangle in which " the side adjacent to the angle is to the hypote- nuse in the ratio 2 : 3. " Thus the lengths of this side and hypotenuse can be taken as 2 and 3 , 6 and 9 , 200 and 300 , and so on . Taking the lengths 2 ...
Page 37
... ( namely , the angle and the six numbers ) are so related , that , if one of the seven be given , then the remaining six can be determined . A few applications to the measurement of lines and angles have been made in some of the preceding ...
... ( namely , the angle and the six numbers ) are so related , that , if one of the seven be given , then the remaining six can be determined . A few applications to the measurement of lines and angles have been made in some of the preceding ...
Page 39
... namely , in the cases in which the parts given are con- sistent with one another , and afford conditions sufficient to enable one to construct a definite triangle . This will be fully apparent later , when the various cases will be ...
... namely , in the cases in which the parts given are con- sistent with one another , and afford conditions sufficient to enable one to construct a definite triangle . This will be fully apparent later , when the various cases will be ...
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Common terms and phrases
A+B+C acute angle algebraic centre CHAPTER circumscribing computation cos² cosec cotangent deduced denoted Derive diedral angle draw equal equator EXAMPLES expression figure Find the distance formulas geometry given Hence hypotenuse included angle inscribed circle intersection latitude law of cosines law of sines length logarithms mantissa mathematics meridian method NOTE number of degrees number of sides opposite perpendicular plane triangle Plane Trigonometry polar triangle pole positive quadrant radian measure radii radius regular polygon relations respectively right angles right triangles right-angled triangle secant Show sides and angles sin² solid angle solution Solve ABC sphere spherical angle spherical degree spherical excess spherical polygon spherical triangle spherical trigonometry subtended surface tables tan² tangent terminal line three angles tower triangle ABC trigono trigonometric functions trigonometric ratios π π
Popular passages
Page 52 - A sin B sin C Cosine Law: cos a = cos b cos c + sin b sin c cos A cos b = cos c cos a + sin c sin a cos B cos c = cos a cos b...
Page 42 - I. The sine of the middle part is equal to the product of the tangents of the adjacent parts.
Page 108 - The sum of the angles of a spherical triangle is greater than two and less than six right angles ; that is, greater than 180° and less than 540°. (gr). If A'B'C' is the polar triangle of ABC...
Page 74 - The area of the surface of a sphere is four times the area of a great circle.
Page 108 - In any triangle the square of any side is equal to the sum of the squares of the other two sides minus twice the product of these two sides and the cosine of their included angle.
Page 72 - The lateral area of a frustum of a cone of revolution is equal to one-half the sum of the circumferences of its bases multiplied by its slant height. Hyp. S is the lateral area, C and C...
Page 62 - Geometry that the area of a triangle is equal to one-half the product of the base by the altitude. Therefore, if a and b denote the legs of a right triangle, and F the area, F THE RIGHT TRIANGLE.
Page 128 - It follows that the ratio of the circumference of a circle to its diameter is the same for all circles.
Page 200 - Show that the area of a regular polygon inscribed in a circle is a mean proportional between the areas of an inscribed and circumscribing polygon of half the number of sides.
Page 202 - Find the area of a regular polygon of n sides inscribed in a circle, and show, by increasing the number of sides of the polygon without limit, how the expression for the area of the circle may be obtained. 13. (a) Find the distance at which a building 50 ft. wide will subtend an angle of 3'. (6) A church spire 45 ft. high subtends an angle of 9