Given: A. sin(x)

B. cos(x)

C. cos(y)

D. sin(y)

Use the drop-down menus in the derivation of the sine sum identity:

cos(x + y)

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

26) -2(7x) = (-2 • 7) x a. associative property of addition b. associative property of multiplication c. commutative property of multiplication d. commutative property of addition

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle