Plane A which contains an isosceles right triangle forms a dihedral angle of 60° with another plane B. If the hypotenuse of the triangle lies in plane B and measures 8 in., find the distance from the vertex of the right angle to plane B. And the length of the projection of each leg of the triangle on plane B.

How to do this , and can some one explain

The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet

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