Question

sin(-x)=-cos(x) for all values of x.
true of false?

Answer 1

@JackJordan

Answer 2

plugin \(x = 0\) and see if the equation satisfies

Answer 3

thank you! got the answer i was looking for!! I will definitely be @ ing you a lot more tonight!

Answer 4

Awesome! may i knw the answer you got

Answer 5

it was false. right?

Answer 6

Yep! good job!

Answer 7

Yeah, there are better ways to see why.
One would be to draw the graphs... another is to realise that sin(-x) = -sin(x)
so the question really is sin(x) = cos(x) which is false :P