Question

Math Analysis: Solve for 0 14 years ago

Answer 1

treat it as a quadratic equation.
let sinx = t
so we have t^2 + t -1 =0

t = (-1 + sqrt5)/2 and t= (-1 - sqrt5)/2

Answer 2

where did you get sqrt5

Answer 3

b^2 -4ac

b=1 , a=1 , c= -1

Answer 4

i still dont understand. :|

Answer 5

what's the quadratic equation again?

Answer 6

could you work out the equation in the quadratic formula that got ou t=-1+sqrt5/2 and t=-1-sqrt5/2

Answer 7

t^2 + t -1 = 0

t = (-b + sqrt D)/2a and t = ( -b - sqrt D)/2a

b = 1 , a = 1 and D = b^2 - 4ac , where c = -1

Answer 8

ok

Answer 9

so how did you get the answers

Answer 10

what do you mean?
how did you get the answers? or what did you get as answers?

Answer 11

i got t=4 for both