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BlackZzzverrR [31]
3 years ago
12

X, Y and Z are three points on a map. Y is 85km and on a bearing of 190° from X. Z is on a bearing of 140°, from Y. Z is due sou

th of X. Calculate the distance between X and Z rounded to 1 DP
Mathematics
1 answer:
Afina-wow [57]3 years ago
6 0

Answer:

The distance between X and Z is approximately 95.99 km

Step-by-step explanation:

  • Given, X, Y and Z are three points on a map. Y is 85km and on a bearing of 190° from X. Z is on a bearing of 140°, from Y. Z is due south of X.

(For Diagram Please Find in Attachment)

  • Thus, The parameters are

The distance of Y from X = 85 km

The bearing of Y from X = 190°

The bearing of Z from Y = 140°  

The bearing of Z from X = 180°

Now,  

  • In triangle XYZ, we have

∠YZX = 180° - (130° + 10°) = 40°

  • Therefore, Apply the sine rule here, we get

(85 km)/sin(40°) = XZ/(sin(130°))

XZ = sin(130°) × (85 km)/sin(30°) ≈ 95.99 km

The distance between X and Z ≈ 95.99 km

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Answer:

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Step-by-step explanation:

Step  1  :

           7

Simplify   —

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Equation at the end of step  1  :

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 — -  —

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Step  2  :

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Equation at the end of step  2  :

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 — -  —

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Step  3  :

Calculating the Least Common Multiple :

3.1    Find the Least Common Multiple

     The left denominator is :       7  

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       Number of times each prime factor

       appears in the factorization of:

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{Left,Right}  

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   Denote the Least Common Multiple by  L.C.M  

   Denote the Left Multiplier by  Left_M  

   Denote the Right Multiplier by  Right_M  

   Denote the Left Deniminator by  L_Deno  

   Denote the Right Multiplier by  R_Deno  

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Making Equivalent Fractions :

3.3      Rewrite the two fractions into equivalent fractions

Two fractions are called equivalent if they have the same numeric value.

For example :  1/2   and  2/4  are equivalent,  y/(y+1)2   and  (y2+y)/(y+1)3  are equivalent as well.

To calculate equivalent fraction , multiply the Numerator of each fraction, by its respective Multiplier.

  L. Mult. • L. Num.      4 • 9

  ——————————————————  =   —————

        L.C.M              63  

  R. Mult. • R. Num.      7 • 7

  ——————————————————  =   —————

        L.C.M              63  

Adding fractions that have a common denominator :

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Add the two equivalent fractions which now have a common denominator

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———————————————  =  ———

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Final result :

 -13            

 ——— = -0.20635  

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