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Find the other dive trigonometric functions OF the acute angle A, given that sec A=2 ?

How do you find the perimeter and area of a rectangle with width of #2sqrt72sqrt5# and length of #3sqrt7+3sqrt5#?

One pump can fill a tank with oil in 4 hours. A second pump can fill the same tank in 3 hours. If both pumps are used at the same time, how long will they take to fill the tank?

Question #faffa

Question #f5a58

The base of a triangular pyramid is a triangle with corners at #(1 ,2 )#, #(3 ,6 )#, and #(8 ,5 )#. If the pyramid has a height of #5 #, what is the pyramid's volume?

Question #06769

The sun casts a shadow of a pine tree on the ground. The tree is 65 feet tall. The angle of depression is 53.4°. What is the length of the shadow?

Question #431d8