286839 286839
  • 23-06-2017
  • Mathematics
contestada

Which expression is equivalent to
(sin x + 1)(sin x − 1)?
A.)cos^2x
B.)-cos^2x
C.)cos^2x+ 1
D.)cos^2x − 1
E.)-cos^2x + 1

Respuesta :

schvelle
schvelle schvelle
  • 23-06-2017
B.
sin^2x + cos^2x =1
hence Sin^2x-1 = - cos^2x
Answer Link
Tharindu
Tharindu Tharindu
  • 23-06-2017
sin^2x -1 = -cos^2x.......
Answer Link

Otras preguntas

What is the matrizie of {3x-2y=-27 {x+3y=13
What percent of 48 is 2.4
What is the matrizie of {3x-2y=-27 {x+3y=13
The Assignment Of The Members Of A Football Team To Jersey Numbers.
330,000 write using Scientific Notation.
A CABLE COMPANY CHARGES $25 PER MONTH AND $5 FOR EVERY PAY-PER-VIEW MOVIE ORDERED. WRITE THE EQUATION THAT REPRESENTS THE SITUATION,LET B represent the total bi
what are some characteristics for simplest form
Anne bought a necklace for each of her three sisters. She paid $7 for each necklace. Suppose she had $9 left. Write and solve an equation to find how much money
70% of what number is 35 ?
What is the sin, cos, and tan of -495 degrees, and -20π/3  ??