Shakawaldgi Shakawaldgi

02-09-2016
Mathematics

contestada

sec^2x+2sec=0. solve the equation for 0

Respuesta :

HomertheGenius HomertheGenius

10-09-2016

u = sec x ( substitution )
u² + 2 u = 0
u ( u + 2 ) = 0
u = 0, or u = - 2
1/cos x = 0 1/cos x = - 2
(not accepted ) cos x = -1/2
x 1 = 2π/3, x 2 = 4π/3

Answer Link

Otras preguntas

Which of the following was a feature of Athenian democracy during the 5th century b. . a. ll citizens had the same wealth and social status. b. he number of vo

How did Andrew Johnson's behavior in office influence the events of the Reconstruction era? a. Johnson's behavior and use of the veto prevented Republicans from

Which explains Daniel Webster's compromise on the issue of slavery? a. He agreed with John c. Calhoun's position. b. He saw no other way to keep the United Stat

According to Enlightenment-era European writers, literature's role was to delight and what? a. proselytize b. instruct c. correct d. destroy

Sound waves cannot travel in a vacuum because a. there is nothing for them to travel through b. there can be no waves of any kind in a vacuum c. they cannot get

what helped to socially and politically unify the early byzantine empire by tolerating and even promoting christianity

French diplomats demanded a bribe to begin talks with the U.S. diplomats in the _____.

There are 10,000 students enrolled at Monroe College. This year, 1,408 are graduating. How many students will be left?

Solve for W T= sqrt(5/(wc)

Why did the Spanish explore the New World in the early 1500s? to spread Catholicism to flee the Spanish government to find religious refuge to find riches