Find the exact value by using a sum or difference identity.cos (-135°)
A. - 
B. - 
C. 1
D. - 
Answer: A
You might also like to view...
Solve.To trim the edges of a rectangular table cloth, 60 feet of lace are needed. The length of the table cloth is exactly one-half its width. What are the dimensions of the table cloth?
A. length: 20 ft; width: 40 ft B. length: 10 ft; width: 20 ft C. length: 5 ft; width: 10 ft D. length: 20 ft; width: 10 ft
Expand the expression using the Binomial Theorem.(4p3 + 3)5
A. 1024p15 + 3840p12 + 5760p9 + 4320p6 + 1620p3 + 243 B. 1024p8 + 3840p7 + 5760p6 + 4320p5 + 1620p4 + 243 C. 1024p10 + 3840p8 + 5760p6 + 4320p4 + 1620p2 + 243 D. 1024p5 + 3840p4 + 5760p3 + 4320p2 + 1620p + 243
Find the general form of the equation of the the circle.Center at the point (2, -3); containing the point (5, -3)
A. x2 + y2 + 4x - 6y + 22 = 0 B. x2 + y2 + 4x - 6y + 4 = 0 C. x2 + y2 - 4x + 6y + 4 = 0 D. x2 + y2 - 4x + 6y + 22 = 0
Find the exact value of the expression if ? = 30°. Do not use a calculator.f(?) = cos ?Find [f(?)]2.
A. 
B. 
C. 
D. 