MartynBH MartynBH

10-06-2016
Mathematics

contestada

sin^2(x)-cos^2(x)=0
Find all the solutions in the interval [0,2pi)
Plz help.

Respuesta :

10-06-2016

Hello,
as sin² x -cos² x=cos 2x
The equation is
cos 2x=0
==>2x=π/2+kπ
==>x=π/4+kπ/2 with k integer

Answer Link

Otras preguntas

What process is represented by the following equation, and where does it take place? sugars + oxygen > energy + carbon dioxide + water A. Cellular respiratio

Please help me on this

Science Class: Question 1: A) Which state(s) of matter have a fixed shape? B)A fixed volume? Question 2: A) Rank the states of matter from most kinetic energy o

You flip a coin then you roll a fair six-sided die. What is the probability the coun landa heads-up and the die shows an even number?

HELP!!! FIRST TO ANSWER GETS BRAINIEST!!!Which of the following equations was used to graph the line shown?

The middle school band has a boy to girl ratio of 4:6. The band had 20 members last year and 25 members this year. How many girls and how many boys are in the b

40 in. in? What is the area of this trapezoid? b2 = 5 in. h = 4 in. 2 in. 3 in. b = 10 in.

Which of the following statements describe the consequences of the British takeover of India in the nineteenth century? Check all that apply. They demolished th

Please help I can’t figure it out NO LINKS LINKS= REPORT

Which Factors would simplify in this expression? (x-8) 4x(x+6) ——————x————- 8(x+6)(x+10) (x+10)