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Rishi
Lv 4
Rishi asked in Science & MathematicsMathematics · 9 years ago

Answer this trig ques on height and dist?

AX is a temple. A is its top and X is bottom. From P due east of X angle of elevation of top A is 60 degree and from another point Q due south of X the angle of elevation of same point A is 45 degree. If distance between P and Q be 100√3 m, find the height of the temple.

Please answer this question. Actually the main prob is I can't locate Q. What is meant by "south of X"? I will be grateful if you also attach the drawing so that I can know how to locate points when it is said south of something or north of something.

Thank you. Best answer with diagram and correct ans. gets +10 points.

3 Answers

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  • Kododo
    Lv 4
    9 years ago
    Favorite Answer

    Let height of the temple be H ...when solved H=150 meters

    Clarifying the positions: I am not able to create a diagram, but I will 'verbalize' one.

    Draw a circle and place a dot (mark this as A) at its center. place 4 dots, each equidistant around the circumference, thus they are 90 degrees apart, label the 4 dots, in a clockwise direction,(start anywhere) as N(north), next E(east), next S(south, next W(west). This represent the directional orientation to the temple A (center dot) Now place a "P" at dot E(east), and place "Q" at dot S(south)

    NOTE: the angle between AP and AQ is 90 degrees.......AP and AQ are the two sides to a right triangle that is formed on the ground with a hypotenuse of PQ= 100 sq. rt3

    Solving the problem: the distance to the south (AQ), where the elevation is 45* is =H (tan 45*)

    .....AQ=H( tan45*)=H

    the distance to the east (AP), where the elavation is 60* is =H (tan 60*)

    ......AP=H(tan 60*)= H/ (sq. rt 3)

    Solve for H...temple's height ..................note: sq. rt 3=1.732

    the ground right triangle has sides of H meters, H/ (sq.rt 3) meters, and a hypotenuse of 100(sq.rt3)

    ..........squaring the sides and sum up: H^2 + (H/sq.rt3)^2= (100 sq.rt3)^2

    4 H^2=10000(9) H^2=2500(9) H=50(3)=150

    Source(s): Memory from class of 1954 The answer IS CORRECT, the extraneous details were to HELP Rishi understand the solution, rather than just providing an answer !!
  • Anonymous
    4 years ago

    surely if I further them as a sprint this is bc i for my section savor their q's and their a's so i'm going to probable shop answering them in spite of the fact that if i are not getting BA. besides the incontrovertible fact that this is an further bonus.

  • J
    Lv 6
    9 years ago

    No diagram, no drawing

    I find that :

    2h² +(100√3)² = h² (1/(sin60)² + 1/(sin45)²)

    you simplify and you get h : the height

    h =150m

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