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

formula of area of circle

What would happen to the planets in the solar system if the sun’s gravitational force were to suddenly disappear? A) They will stop spinning. B) They will fly

Choose the best description for the real number 34 over 3. Irrational, because it is a fraction Irrational, because it is a repeating decimal Rational, bec

The following table contains data collected on the math averages of seniors in high school and their math averages as freshman in college. Make a scatter plot a

Riley is writing a report about safe vehicles. He is using information from this Web article and would like to paraphrase the following sentence from the articl

Find the percent error of 4cm and 0.2 cm? Please help, thanks.

Bret Parks has group health insurance. His coverage has a $200 deductible. He was recently treated for a covered condition. The costs totaled $3,500.00. Bret's

who is the fastest man in the world

6/8= 3/d I need to find out what D is .

someone please help, step by step i'm so lost :(