In triangle ABC, angle C is a right angle. Find the value of the trig function sec A if c = 25, b = 20, a = 15. (Hint: draw a triangle and label with given information)

What expression is equivalent to log3(x+4)

How do you determine if an ordered pair is a solution to a given equation?

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?