Elementary TrigonometryMacmillan and Company, 1893 - 404 páginas |
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Página 39
... base AC of a triangle ABC , find a and c , given A = 30 ° , C - 45 ° , BD = 10 . 3. In the triangle ABC , AD is drawn perpendicular to BC making BD equal to 15 ft .: find the lengths of AB , AC , and AD , given that B and C are equal to ...
... base AC of a triangle ABC , find a and c , given A = 30 ° , C - 45 ° , BD = 10 . 3. In the triangle ABC , AD is drawn perpendicular to BC making BD equal to 15 ft .: find the lengths of AB , AC , and AD , given that B and C are equal to ...
Página 136
... base is 2 : solve the triangle . 2. If B = 45 ° , C = 75 ° , and the perpendicular from A on BC is 3 , solve the ... base of a triangle are 221 ° and 112 , shew that the altitude is half the base . 8. If a = 26 and A = 3B , find the ...
... base is 2 : solve the triangle . 2. If B = 45 ° , C = 75 ° , and the perpendicular from A on BC is 3 , solve the ... base of a triangle are 221 ° and 112 , shew that the altitude is half the base . 8. If a = 26 and A = 3B , find the ...
Página 139
... base is the index of the power to which the base must be raised in order to equal the given number . Thus if a * = N , x is called the logarithm of N to the base a . Example 1. Since 34-81 , the logarithm of 81 to base 3 is 4 . Example ...
... base is the index of the power to which the base must be raised in order to equal the given number . Thus if a * = N , x is called the logarithm of N to the base a . Example 1. Since 34-81 , the logarithm of 81 to base 3 is 4 . Example ...
Página 140
... base 10 are known as Common Log- arithms ; this system was first introduced in 1615 by Briggs , a contemporary of ... base . 154. The logarithm of 1 is 0 . For ao = 1 for all values of a ; therefore log 1 = 0 , whatever the base may be ...
... base 10 are known as Common Log- arithms ; this system was first introduced in 1615 by Briggs , a contemporary of ... base . 154. The logarithm of 1 is 0 . For ao = 1 for all values of a ; therefore log 1 = 0 , whatever the base may be ...
Página 142
... base 10 can be found by inspection , as we shall now shew . 162. To determine the characteristic of the logarithm of any number greater than unity . It is clear that a number with two digits in its integral part lies between 101 and 102 ...
... base 10 can be found by inspection , as we shall now shew . 162. To determine the characteristic of the logarithm of any number greater than unity . It is clear that a number with two digits in its integral part lies between 101 and 102 ...
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Términos y frases comunes
1+cos 1+tan² a+cos A+tan acute angle angle of elevation B+cos centre circle College cos² cos³ cosec cosine cot² cyclic quadrilateral decimal denote diff equal equation ex-central triangle Example expression Fcap feet Find the angle find the distance find the height Find the number Find the value flagstaff following identities formula given log greatest angle Hence horizontal plane hypotenuse inscribed LAOB loga logarithm magnitude miles negative number of radians observer pedal triangle perpendicular polygon positive Prof Prove the following quadrant quadrilateral radian measure radius vector regular polygon right angle right-angled triangle sec² sexagesimal shew sides sin sin sin sin² sin³ sine solution solve the triangle subtends an angle supplementary angles tan² tangent tower triangle ABC trigono trigonometrical functions trigonometrical ratios π π
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