Elementary Text-book of TrigonometryBlackie & Son, 1884 - 176 páginas |
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... represented by different numbers when different units are adopted . For example , the distance of a mile will be repre- sented by the number 1 when a mile is the unit of length , by the number 1760 when a yard is the unit of length , by ...
... represented by different numbers when different units are adopted . For example , the distance of a mile will be repre- sented by the number 1 when a mile is the unit of length , by the number 1760 when a yard is the unit of length , by ...
Página 5
... represented by different numbers when different units are adopted . For example , the distance of a mile will be repre- sented by the number 1 when a mile is the unit of length , by the number 1760 when a yard is the unit of length , by ...
... represented by different numbers when different units are adopted . For example , the distance of a mile will be repre- sented by the number 1 when a mile is the unit of length , by the number 1760 when a yard is the unit of length , by ...
Página 8
... represents a number the correct value of which to five decimal places is 3.14159 . If r be the radius of a circle , 2r is the diameter , and there- fore circumference 2r circumference = 2 ′′ r . = π , or Ex . 1. The radius of a circle ...
... represents a number the correct value of which to five decimal places is 3.14159 . If r be the radius of a circle , 2r is the diameter , and there- fore circumference 2r circumference = 2 ′′ r . = π , or Ex . 1. The radius of a circle ...
Página 9
... represents a definite number , the radian is a definite angle , which is independent of the radius of the circle . As we cannot find the exact value of π , we cannot find the exact number of degrees in the radian , but taking # = 3 ...
... represents a definite number , the radian is a definite angle , which is independent of the radius of the circle . As we cannot find the exact value of π , we cannot find the exact number of degrees in the radian , but taking # = 3 ...
Página 17
... represents the angle whose radian measure is 0 ? = 10 , 0 · 7854 , show that the number is 45 , very If n = nearly . 9. Assuming that the moon revolves round the earth in 27 days in a circle whose radius is 240,000 miles , find the ...
... represents the angle whose radian measure is 0 ? = 10 , 0 · 7854 , show that the number is 45 , very If n = nearly . 9. Assuming that the moon revolves round the earth in 27 days in a circle whose radius is 240,000 miles , find the ...
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Términos y frases comunes
angle AOB angle BAC angle increases angle less Article base centre circumference cloth boards common logarithm complement cos(A+B cos2A cos4A cosB cosC cose cosecA cosine cotA cotangent decimal places degree measure diameter distance equal equation Euclid EXAMPLES feet Find the angle Find the height find the number find the values flagstaff following angles formula given Hence hypotenuse inches log2 loga logarithms of numbers magnitude mantissa miles negative numbers number expressing number of degrees numerical value perpendicular positive Prove quadrant radian measure radii ratios of angles regular polygon respectively right angle right-angled triangle sec²A secA secant side BC Similarly sin(A sin(A+B sin2A sin2B sin3A sinB sine sine and cosine square root table of logarithms tan(A+B tan²A tanA tanB tangent tanß tower triangle ABC trigono trigonometrical ratios unit of angle yards
Pasajes populares
Página 90 - The logarithm of the product of two or more numbers is equal to the sum of the logarithms of the numbers. For, let m and n be two numbers, and x and y their logarithms. Then, by the definition of a logarithm, m — ax, and n = a".
Página 90 - ... the logarithm of a fraction is equal to the logarithm of the numerator minus the logarithm of the denominator.
Página 118 - In any triangle, the sides are proportional to the sines of the opposite angles. That is, sin A = sin B...
Página 149 - Find the length of the side of a square whose area is equal to that of a rectangle the sides of which are 94 '28 and 6720 yards.
Página 89 - The logarithm of a number is the index of the power to which the base of the system must be raised to equal a given number.
Página 158 - The sides of a triangle are in arithmetical progression, and its area is to that of an equilateral triangle of the same perimeter as 3 : 5.