Question

obtain the positive solution less than 360 degree
4sin^2x-3 = 0

Answer 1

add 3, divide off the 4; and sqrt it all

Answer 2

sin(x) = sqrt(3)/2 = 60 and 120 if i see it right

Answer 3

yes thats the formula but when i put it on http://www.wolframalpha.com/ it says false TT

Answer 4

false TT? im gonna have to try that :)

Answer 5

sin(x) = sqrt(3)/2 x= 60 and 120 yes false haha

Answer 6

http://www.wolframalpha.com/input/?i=4sin%5E2%28x%29-3%3D0

Answer 7

its, 60 and 120 degrees ...

Answer 8

example sec^2x-4 =0 answer http://www.wolframalpha.com/input/?i=1%2Fcos%5E2%28x%29%3D4%3B++cos%28x%29%3D1%2F2%3B+x%3D%2B%2F-acos%281%2F2%29%2B2*Pi*k%3B++x%3D60 °%3B+300°

Answer 9

1/cos^2(x)=4; cos(x)=1/2; x=+/-acos(1/2)+2*Pi*k; x=60°; 300°;

Answer 10

but i know its 60 and 120 is the answer but theres something is missing i forgot

Answer 11

right, for cos(60) and cos(300) = 1/2

1/2^2 = 1/4

1/(1/4) = 4

Answer 12

yes

Answer 13

"positive solution" means that only positive values for x ?

Answer 14

yes

Answer 15

weee i get it know ^^ thx