Name: amandeep grover
Who is asking: Teacher
Level: Secondary


solve the equation sin x = x/10

Hi Amandeep,

I like this question because it makes us think about what we mean by "solve". When we ask students to solve

x2 + 4x + 2 = 0

we expect them to use the general quadratic and simplify to get

For sin x = x/10 I know one solution, x = 0 and from the diagram I know there are 6 more but I don't know a nice way to exprress them.

I can approximate the solutions to as many decimal places as you might want but I can't express the solutions in a simple algebraic or trigonometric exprression.


Go to Math Central