Plane and Spherical TrigonometryGinn, 1915 - 230 páginas |
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Página 6
... dividing the length of a vertical rod by the length of its horizontal shadow , the tangent of the angle of elevation of the sun at that time was found to be 0.82 . How high is a tower , if the length of its horizontal shadow at the same ...
... dividing the length of a vertical rod by the length of its horizontal shadow , the tangent of the angle of elevation of the sun at that time was found to be 0.82 . How high is a tower , if the length of its horizontal shadow at the same ...
Página 14
... Substituting the given values , we have 4.68c sin 22 ° , or 4.6825 = = 0.3746 c . Dividing by 0.3746 . 12.5 = = C. What check should be applied here and in Ex . 2 ? Exercise 6. Use of the Sine Find a to four 14 PLANE TRIGONOMETRY.
... Substituting the given values , we have 4.68c sin 22 ° , or 4.6825 = = 0.3746 c . Dividing by 0.3746 . 12.5 = = C. What check should be applied here and in Ex . 2 ? Exercise 6. Use of the Sine Find a to four 14 PLANE TRIGONOMETRY.
Página 35
... dividing 15.2 by 0.2414 , we adopt the modern plan of first multiplying each by 10,000 . Only part of the actual division is shown . Instead of dividing a by sin A to find c , we might multiply a by csc A , as on page 22 , except that ...
... dividing 15.2 by 0.2414 , we adopt the modern plan of first multiplying each by 10,000 . Only part of the actual division is shown . Instead of dividing a by sin A to find c , we might multiply a by csc A , as on page 22 , except that ...
Página 36
... dividing by cos A. The reason for not doing so is the same as that given in § 31 for not multiplying by csc A. 33. Given the Hypotenuse and a Side . For example , given a = 47 , C = 63 , find A , B , and b . a 1. sin A == с 2. B 90 ...
... dividing by cos A. The reason for not doing so is the same as that given in § 31 for not multiplying by csc A. 33. Given the Hypotenuse and a Side . For example , given a = 47 , C = 63 , find A , B , and b . a 1. sin A == с 2. B 90 ...
Página 39
... dividing by them is considerable . For this reason numerous devices have appeared for simplifying this work . Among these devices are various calculating machines , but none of these can easily be carried about and they are too ...
... dividing by them is considerable . For this reason numerous devices have appeared for simplifying this work . Among these devices are various calculating machines , but none of these can easily be carried about and they are too ...
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Plane and Spherical Trigonometry, and Surveying G. A. (George Albert) 1835-1 Wentworth Sin vista previa disponible - 2015 |
Términos y frases comunes
9 log acute angle angle of depression angle of elevation characteristic circle colog cologarithm computation cos(x cos² cos²x cosecant cot log cotangent cotx decimal places degrees Dividing equal equation example Exercise Find log Find the area Find the distance Find the height Find the length Find the value given the following graph Hence horizontal hypotenuse included angle interpolation latitude Law of Cosines Law of Sines Law of Tangents log cos log log cot 9 log sin log logarithm longitude mantissa negative perpendicular polygon positive quadrant radians radius right angle right spherical triangle right triangle roots secant secx sexagesimal ship sails sides sin B sin sin log cos sin(x sin² solution solve the triangle spherical triangle subtends subtract tabular difference tangent triangle ABC whence
Pasajes populares
Página 109 - Sines that the bisector of an angle of a triangle divides the opposite side into parts proportional to the adjacent sides.
Página 98 - I sin y \2 / \2 / = sin x cos y + cos x sin y, sin (a; — y) = sin (x + (— y)) = sin a; cos (— y) + cos a; sin (— y) = sin x cos y — cos x sin y, tan (x + y) = sin (x + y) sin x cos y + cos x...
Página 52 - The logarithm of a quotient is equal to the logarithm of the dividend minus the logarithm of the divisor.
Página 44 - If the number is less than 1, make the characteristic of the logarithm negative, and one unit more than the number of zeros between the decimal point and the first significant figure of the given number.
Página 50 - The logarithm of a product is equal to the sum of the logarithms of its factors.
Página 57 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Página 116 - In any obtuse triangle, the square of the side opposite the obtuse angle is equal to the sum of the squares of the other...
Página 112 - Two sides of a triangle, and the angle opposite one of them, being given, to describe the triangle. Let A and B be the given sides, and C the given angle.
Página 128 - Prove that the area of a parallelogram is equal to the product of the base, the diagonal, and the sine of the angle included by them.
Página 151 - Equation 3, we see that an angle of 1 rad is the angle subtended at the center of a circle by an arc equal in length to the radius of the circle (see Figure 2).