What is the value of d in the equation?

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

Manny bought 12 pounds of vegetables at the supermarket. 75% of the vegetables were on sale. how many pounds of vegetables were not on sale? 98 points : )

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6