ChatterBank1 min ago
MATHS QUESTION!! PLEASE HELP!!
4 Answers
From two points X and Y, the angles of elevation of the top (T) of a church TZ are 14 degrees and 19 degrees respectively. If XYZ is a horizontal straight line and XY- 120m, find YT and the height of the tower
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For more on marking an answer as the "Best Answer", please visit our FAQ.Draw/sketch a triangle with base 120 and angles 14 and 19 on the base and the other angle is 180-33=147.
Draw a vertical line for the tower. Call height x.
You have 2 right angle triangles now so you can find 2 angles at the top (76 and 71).
Call vertical height x
Call 2 base lengths p and q where p+q=120
Then use sin, cosine, tangent rules to find lengths.I've no calculator with me with sines etc so I can't do it for you.
you'll need to use substitutions
Draw a vertical line for the tower. Call height x.
You have 2 right angle triangles now so you can find 2 angles at the top (76 and 71).
Call vertical height x
Call 2 base lengths p and q where p+q=120
Then use sin, cosine, tangent rules to find lengths.I've no calculator with me with sines etc so I can't do it for you.
you'll need to use substitutions