Lincoln, Nebraska lies directly north of Dallas, Texas. Lincoln is at a latitude of 40.5° N and Dallas is at a latitude of 32.5° N.
Assuming the radius of the earth is 3,960 miles, how far apart are
these cities?

Solve the triangle. a = 21°, c = 105°, c = 5

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters

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