Plane [and Spherical] Trigonometry for Colleges and Secondary SchoolsLongmans, Green, and Company, 1908 |
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Página xiii
... third the angle 94. Functions of the sum of three angles 95. Identities . · • 96. For an acute angle of radians , cose > 1 156 · 157 · 158 159 · sin 0 0 160 4 ' 4 ' · 161 162 97. One method of computing trigonometric functions . 98 ...
... third the angle 94. Functions of the sum of three angles 95. Identities . · • 96. For an acute angle of radians , cose > 1 156 · 157 · 158 159 · sin 0 0 160 4 ' 4 ' · 161 162 97. One method of computing trigonometric functions . 98 ...
Página 13
... third place of deci- mals , for engineers are satisfied when a measurement is correct to within of an inch . As a ... third place is less than 5 , and by increasing the number in the second place by unity when the number in the third ...
... third place of deci- mals , for engineers are satisfied when a measurement is correct to within of an inch . As a ... third place is less than 5 , and by increasing the number in the second place by unity when the number in the third ...
Página 14
Daniel Alexander Murray. 3.7257 . When the number in the third place is 5 and this is followed by zeros only , the number in the second place is unchanged if it is even , and is increased by unity if it is odd ; thus , e.g. , 3.78 for ...
Daniel Alexander Murray. 3.7257 . When the number in the third place is 5 and this is followed by zeros only , the number in the second place is unchanged if it is even , and is increased by unity if it is odd ; thus , e.g. , 3.78 for ...
Página 15
... third , and four times as great ? Compare , if possible , the angles in these triangles . 13. ( a ) In a right - angled triangle the hypotenuse is 35 yd . and the per- pendicular is 15 yd .; calculate the ratios specified in Ex . 8 ...
... third , and four times as great ? Compare , if possible , the angles in these triangles . 13. ( a ) In a right - angled triangle the hypotenuse is 35 yd . and the per- pendicular is 15 yd .; calculate the ratios specified in Ex . 8 ...
Página 38
... third side and the other angles are required . The graphical solution is as follows : Construct a triangle QPR having two sides , PQ , PR , representing 10 ft . , 5 ft . , respectively , on some con- 20-22 . ] venient scale , and METHOD ...
... third side and the other angles are required . The graphical solution is as follows : Construct a triangle QPR having two sides , PQ , PR , representing 10 ft . , 5 ft . , respectively , on some con- 20-22 . ] venient scale , and METHOD ...
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Términos y frases comunes
A+B+C acute angles algebraic centre CHAPTER circumscribing computation construction cos² cosec cosine cotangent deduced definitions denoted derived diedral angle draw equal equation EXAMPLES expression figure formulas geometry height Hence hypotenuse included angle inscribed circle intersection isosceles triangle law of cosines law of sines length logarithms M₁ method negative NOTE number of degrees number of sides OP₁ opposite perpendicular Plane Trigonometry polar triangle pole positive angles quadrant QUESTIONS AND EXERCISES radian measure radius regular polygon relations respectively revolving right angles right-angled triangle sec² secant Show shown sides and angles sin² sine solid angle Solve ABC sphere spherical angle spherical degrees spherical excess spherical polygon spherical triangle spherical trigonometry subtended tan² tangent terminal line tower triangle ABC triedral trigono trigonometric functions trigonometric ratios whole number
Pasajes populares
Página 35 - 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...
Página 25 - I. The sine of the middle part is equal to the product of the tangents of the adjacent parts.
Página 87 - 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...
Página 85 - 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.
Página 55 - 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...
Página 111 - The ratio of a circumference of a circle to its diameter is the same for all circles. [See Art. 9 (6).] For the proof of (a), reference may be made to any plane geometry ; for instance, to Euclid VI., 33.* The proof of (6) is not contained in all geometries ; for instance, Euclid does not give...
Página 183 - The area of a regular polygon inscribed in a circle is a geometric mean between the areas of an inscribed and a circumscribed regular polygon of half the number of sides.
Página 41 - 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.