Find the height of a parallelogram if its base is 9 feet and its area is 27 square feet

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Consider the triangle. which shows the order of the angles from smallest to largest? angle a, angle b, angle c angle b, angle a, angle c angle b, angle c, angle a angle c, angle a, angle b

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.