If sin(Ф)=3/5, and cos(Ф)=-4/5, which of the following is true?
a.) sin((π/2)-Ф)= 4/5
b.) cos((π/2)-Ф)=-3/5

The sixth grade art students are making a mosaic using tiles in the shape of right triangles. each tile has leg measures of 3 centimeters and 5 centimeters. i f there are 200 tiles in the mosaic what is the area of the mosaic.

Graph the equation. select integers for x

What is the total area of the figure?