Plane Trigonometry and TablesGinn, 1914 - 188 páginas |
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Página 13
... whence we These two formulas should be memorized . From these formulas the following relations can easily be deduced : sin x cos x tanx = cos x / cot x = tanx / sec x . sinx / tanx . cos x = cot x sin x = cot x / csc x = tan x sin x sec ...
... whence we These two formulas should be memorized . From these formulas the following relations can easily be deduced : sin x cos x tanx = cos x / cot x = tanx / sec x . sinx / tanx . cos x = cot x sin x = cot x / csc x = tan x sin x sec ...
Página 14
... whence sin A , 0.6293 sin A. = 0.6293 sin 39 ° = A = 39 ° . ° ; 3. Given a = 4.684 and A = 22 ° , find c . As stated above , c may be found from the formula a = c sin A by using a and sin A , although we shall later use the cosecant for ...
... whence sin A , 0.6293 sin A. = 0.6293 sin 39 ° = A = 39 ° . ° ; 3. Given a = 4.684 and A = 22 ° , find c . As stated above , c may be found from the formula a = c sin A by using a and sin A , although we shall later use the cosecant for ...
Página 40
... whence log1 = 0 ; whence log 1 n . bn 1. Since 25 = Exercise 18. Logarithms 32 , what 40 PLANE TRIGONOMETRY.
... whence log1 = 0 ; whence log 1 n . bn 1. Since 25 = Exercise 18. Logarithms 32 , what 40 PLANE TRIGONOMETRY.
Página 45
... whence log 2350 Dividing 2350 by 10 , we have = 3.37107 . 108.87107-1102.87107 = 235 ; whence log 235 = 2.37107 . Dividing 2350 by 10 ' , or 10,000 , we have 108.87107-4-101.37107 — 0.235 ; whence log 0.235 = 1.37107 . That is , the ...
... whence log 2350 Dividing 2350 by 10 , we have = 3.37107 . 108.87107-1102.87107 = 235 ; whence log 235 = 2.37107 . Dividing 2350 by 10 ' , or 10,000 , we have 108.87107-4-101.37107 — 0.235 ; whence log 0.235 = 1.37107 . That is , the ...
Página 58
... Whence Check . 54 625 . = x log 5 = log 625 log 625 x = log 5 2.79588 0.69897 In all such cases bear in mind that one logarithm must actually be divided by the other . If we wished to perform this division by means of logarithms , we ...
... Whence Check . 54 625 . = x log 5 = log 625 log 625 x = log 5 2.79588 0.69897 In all such cases bear in mind that one logarithm must actually be divided by the other . If we wished to perform this division by means of logarithms , we ...
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9 log ABCD absolute value acute angle angle of depression angle of elevation antilogarithm base characteristic circle colog cologarithm computation cos(x cos² cos²x cosecant cosine cot log cotangent cotx decimal places degrees diagonal diameter divide equal equation example Exercise Find four angles Find log Find the antilogarithm Find the area Find the distance Find the height Find the length find the value fraction given the following graph Hence horizontal hypotenuse included angle inscribed interpolation Law of Cosines Law of Sines Law of Tangents log cos log log cot 9 log N log log sin log logarithm longitude mantissa plane positive quadrant radians radius right triangle roots secant secx sexagesimal ship sails sides sin log cos sin(x sin² sin²x Solve subtends subtract tabular difference tan-¹ tangent triangle ABC trigonometry whence