In a right triangle ABC, tan (a) = 20/21. find sin (a) and cos (a)

During which geologic epoch does the New York State rock record consist of weakly consolidated to unconsolidated sediments? (1) Early Permian (2) Early Jurassic (3) Late Cretaceous (4) Pliocene

Can 8/12 be simplified?

What mineral resources can be harvested from the continental shelf?

An important effect of mountain ranges, large rivers, and ocean coastlines on a country has often been the? A. Growth in available fertile land B. Encouragement of cultural convergence C. Formation of the country's borders D.

Which statements correctly describe the properties of air? Check all that apply. Air has mass but no weight. Air pressure is created by the weight of the atmosphere pushing on Earth's surface.

Why is mexico city the capital of mexico?

Why do deserts form around areas near the tropics but not the equator

Which of the following is not an object in our solar system? Star Black hole Asteroid Comet

What type of economic system involves supply and price regulated by the government?

Where does most of the water vapor in the atmosphere originate? plants oceans glaciers snowfields