Question

medal if you could help me :)

A = acute angle
cos 1/2 A = √x+1/√2x
sin A... ?

Answer 1

To be clear, is it \[\cos(\frac{ x }{ 2 } )=\sqrt{x}\frac{ 1 }{ \sqrt{2x} }\]
or \[\cos(\frac{ x }{ 2 } )=\sqrt{x}\frac{ 1 }{ \sqrt{2}x }\]

Answer 2

I meant for a plus between the two terms.

Answer 3

@albertedison98 nah i dont get it :/

Answer 4

Is the last term one over sqrt(2)*x, or one over sqrt(2x)?

Answer 5

@albertedison98
from this options , whats the correct one ?
a. (√X^2-1)/(√x^2)
b. (√X^2)/(√x^2+1)
c. √x^2-1
d. √x^2+1
e. (√X^2+1)/(√x)

Answer 6

one over sqrt(2x)