kellerpaula kellerpaula
  • 23-03-2020
  • Mathematics
contestada

Trigonometry
Trigonometric Equations
0 ≤ x ≤ 2 π, solve the equation 4 sec x +8=0

Respuesta :

surjithayer10 surjithayer10
  • 23-03-2020

Answer:

Step-by-step explanation:

4 sec x=-8

secx=-2

cos x=-1/2=-cos π/3=cos(π-π/3),cos (π+π/3)

=cos (2π/3),cos(4π/3)

x=2π/3,4π/3

Answer Link
amna04352
amna04352 amna04352
  • 23-03-2020

Answer:

x = 2π/3, 4π/3

Step-by-step explanation:

4secx = -8

secx = -2

cosx = -½

basic angle = π/3

x = π - π/3, π + π/3

x = 2π/3, 4π/3

Answer Link

Otras preguntas

please no link solve for X:-2x>-26
3. A 1500 kg car moving at 30 m/s strikes a 6000 kg van initially at rest. If the car comes to a complete stop after the collision, what is the final velocity o
Write an equation in slope-intercept form for the line with slope -1/4 and -7 y-intercept. NO LINKS.
the relationship between benefits and the sacrifice needed to obtain those benefits is also known as
When going from slower medium to a faster medium, light is bent _____.
Select the best estimate for the quotient.75.1÷9=
The cell membrane is known as the fluid mosaic model. True False
In a controlled environment, can be used to slow the decay process in foods. A. gamma rays B. infrared radiation C. microwaves D. x-rays
-15x = -75 I need HELP!!!!
When Wells Fargo employees fraudulently opened customer accounts in order to meet extremely high sales quotas, rehabilitating this bank's shattered reputation w