Let cos A = with A in Q1 and find sin(2A)

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.

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