What is the height of the radio tower
A radio tower has a 64-foot shadow cast by the sun. If the angle from the tip of the shadow to the top of the tower is 78.5 degrees, what is the height of the radio tower?
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The first gear in a single-stage gear train has 42 teeth and an angular velocity of 3 revolutions per second. The second gear has 7 teeth.
The angle of depression to the bottom of the pole is 14°, and the angle of elevation to the top of the pole is 18°. Find her distanse to the pole.
An airplane travels at 180 km/h for 5 hr in a direction of S48°E from Glenview Naval Air Station. At the end of this time, how far south of the Glenview Naval Air Station is the plane (to the nearest kilometer)?
To determine the diameter of the sun, an astronomer might sight with a transit first to one edge of the sun and then to the other, estimating that the included angle equals 32'.
The string of the kite is taut and makes an angle of 60 degree with the horizontal. Approximate the height of the kite above level ground if 500 feet of string is payed out.
There are 14 standbys who hope to get seats on a flight, but only 6 seats are available on the plane. How many different ways can the 6 people be selected?
How are the empirical and molecular formulas of a compound related? What is the empirical formula of compounds: ethyne (C2H2) and styrene (C8H8).
The precipitate was then heated in a stream of Cl2, converting it to 0.7125 g of AgCl. Calculate the % w/w NaNo3 in the sample.
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