Which of the following is NOT permitted when verifying trigonometric identities? a.
simplifying one side of the identity to match the other side
c.
simplifying each side of the identity separately to get the same expression on both sides
b.
cross multiplying if the identity is a proportion

Please select the best answer from the choices provided

A
B
C

The area of a 25-inch tv screen is 300 square inches. the area of a 40-inch tv screen is 768 square inches. the are of the smaller screen is what percent of the area of the larger screen?

Volume of cylinder with a radius of 8cm and height of 25 cm

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88