Which trig expression is equal to sin (72° - a) ?

A) cos 18°

B) sin 18°

C) cos (90° - (72° - a))

D) sin (90° - (72° - a))

Tan (θ) / sec (θ) - cos (θ)

The surface area of a cube is 150cm squared. What is the length of each edge?

A ship sails at 50 miles per hours. This is defined by the equation: d = 50t. There d is distance travelled and t is the time. Ifhe ship saios for 15 hours, how far will it travel

John was born in January. On the first July 4th of his life, his aunt gives him $50 to save for his college education. On every subsequent July 4th, she gives him $25 dollars more than the previous year.

What is the effective annual interest rate on a savings account that earns interest at a rate of 1.55% compounded monthly? A.) 1.29% B.) 1.55% C.) 1.56% D.) 1.59%

What is the answer to 1 3/5 * 3/5

What is - 4 - (-12) ? I don't know if you add them or subtract.

4 Chander earns a base pay of $2,200 per month He also earns a commission of 4% of his total sales One month Chander earned $2,400 Explain how to nd Chander's total sales for that month How much were his Total sales?

How to solve the problem 8y+4=5y+19

What are the dimensions of a rectangle that has a perimeter of 44 units and an area of 105 square units?