Question

is this right?

Answer 1

\frac{ \frac{ -2 }{ sqrt{4.25} } *cos (t)}{ \frac{ 2 }{ sqrt{4.25} } }

Answer 2

\[\frac{ \frac{ -2 }{ \sqrt{4.25} } *\cos (t)}{ \frac{ 2 }{ \sqrt{4.25} } }\]

Answer 3

equals to: -cos (t)

Answer 4

Same thing as -2(cost)/2. -2/2 is -1. -1(cost)

Answer 5

:D thanks