A 6-foot person walks from the base of a broadcast tower directly toward the tip of the shadow cast by the tower. When the person is 28 feet from the tower and 3 feet from the tip of the tower's shadow, his shadow starts to appear beyond the tower's shadow.
Find an equation involving the height of the tower, h, and the angle shown on the picture.

One of the brightest comets of the 20th century was comet hyakutake, which passed close to the sun in early 1996. the orbital period of this comet is estimated to be about 30,000 years. find the semi-major axis of this comet’s orbit. compare it to the average sun-pluto distance and to the distance to alpha centauri, the nearest star to the sun, which is 4.3 light-years distant.

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

The biome that includes evergreen trees is the forest biome.