Question

Find sin(x) if cos(x)=a/a+2.

Answer 1

a) \[ \frac{ 2\sqrt{a+1} }{ a+2 }\]
b) \[\frac{ 4(a+1) }{a+2 }\]
c) \[\frac{ 2\sqrt{a+1} }{ a }\]
d) \[\frac{ 4(a+1) }{ a }\]
e) \[\frac{ \sqrt{a+1} }{2a }\]

Answer 2

Try posting this in 'Mathematics'

Answer 3

Post this one in the math section :P

Answer 4

oh, opps

Answer 5

No wonder... :P thx

Answer 6

\[\cos(x)=\frac{ adjacent }{ hypotenuse }\]