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
VER TODAS LAS RESPUESTAS ( 21+ )
Otras preguntas
Which expression is equivalent to 3\dfrac78 - 6\dfrac143 8 7 −6 4 1 3, start fraction, 7, divided by, 8, end fraction, minus, 6, start fraction, 1, di
plssss answer Which of the following situation can be modeled by circumference of a circle? * A. Amount of paint needed to paint a circular auditorium ceiling.
Find the surface area of the prism. 5.7 4 3 4
The question says “write with prime number base” and the question is 8 square root 32 (7,d)
a person can swim at a vigorous pace for 30 minutes without getting tired. what is an appropriate long-term goal for this person? to swim at a vigorous pace fo
explain some environmental conditions that encourage the appearance of the basidiocarp (aka mushroom). Short answer needed
Eve plays basketball. She makes 6 free throws for every 3 free throws that she misses. If she missed 27 free throws at her last practice, how many free throws d
Which sentence in this passage from Herman Melville’s short story "Bartleby, the Scrivener" is an example of verbal irony? A. I seldom lose my temper, much mo
What is the circumference of a circle with a radius of 91 mm? (use 22/7 for pi; show your work in numbers)
What is the slope of a line parallel to the line whose equation is x+y=5 Fully reduce your answer. Slopes of Parallel/Perpendicular Lines
