<1 nd <2 are complementary angles. The measure of <1 is 69 degrees. The measure of<2 is 3x degrees. Find the value of X. The figure is not drawn on a scale

Which triangles area would be calculated using the trigonometric area formula

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

Can someone check if i did this correct. it’s number 4 if you’re wondering.