molleyk
molleyk
11-05-2018
Mathematics
contestada
If sin x =1/2 what
is cos x
Respuesta :
gmany
gmany
15-05-2018
[tex]\sin^2x+\cos^2x=1\to\cos^2x=1-\sin^2x\to\cos x=\sqrt{1-\sin^2x}\\\\\sin x=\dfrac{1}{2}\\\\\text{substitute}\\\\\cos x=\sqrt{1-\left(\dfrac{1}{2}\right)^2}=\sqrt{1-\dfrac{1}{4}}=\sqrt{\dfrac{3}{4}}=\dfrac{\sqrt3}{\sqrt4}=\dfrac{\sqrt3}{2}[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 14+ )
Otras preguntas
which group aided the Americans during the Revolutionary War
how do you solve 14g>56
How do I get the revised bill rate ?
Write a summary of 250-500 words, i.e., 1/2 to 1 page, of Matthew's life both before and after he became a follower of Jesus. Include Scripture verses and other
which combinations of servings is most likely to provide the widest variety of vitamins and minerals
A scuba diver descends 63 feet in 18 seconds. What number represents the change in the diver's position in feet per second?
how is the graph of y=2(3)^x+1 translated from the graph of y = 2(3)^xplease explain all algebrqic steps leading to your answer
2. How did fighting the American revolution impact the American view of central government? A) They remained suspicious of a strong central government. B) They
What types of gifts have you given to someone who is important to you? Check any that apply.
Who was primarily responsible for the Cold War the United States it the Soviet Union ?
