In right triangle abc, angle c is a right angle. which is equal to cos a? a. cos b b. csc b c. sec b d. sin b

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

How many real-number solutions does the equation have? -4x^2 + 10x + 6 = 0 a. no solutions b. two solutions c. infinitely many solutions d. one solution

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?