godsrockstar godsrockstar

02-11-2017
Mathematics

contestada

Which expression is equivalent to sin^2 x-sin x - 2/sin x -2
A. sin x + 1

B. sin x − 1

C. sin2x

D. -sin2x

Respuesta :

DrPepper21 DrPepper21

02-11-2017

Set sin x to a variable, i.e. u

u^2-u-2/u-2.

Factor:

(u-2)(u+1)/(u-2)

Simplify by canceling the u-2s...

leaving u+1. Since we substituted u for sin x...
the answer is A. sin x + 1

Answer Link

Otras preguntas

what makes colorado plateau a special place

A movie theater gave out 50 coupons for $3 off each movie. What is the total amount of discounts provided by the theater?

What is the value of z for the equation fraction 1 over 2z = −fraction 3 over 4 + fraction 1 over 4z? −3 −1 1 3

What is the bond order of B2+? What is the bond order of B2+? @Chemistry

Cual es la respuesta de esto5(2x-3)=15

how are isotopes detected

About 400,000 people visited an art museum in December. What could be the exact number of people who visited the art museum

Valor tiene acentuación ?

the particles in a solid a. have so much energy that the particles move everywhere. b. have no energy and cannot move. c. have little energy and vibrate in plac

A cable weighing 0.6 pounds per foot is attached to a small 80-pound robot, and then the robot is lowered into a 40-foot deep well to retrieve a 7 pound wrench.