Question

Trigonometry Help (only 4 left!)

Prove the Identity:

sec^2 x= (4sin^2 x)/(sin^2 x)

Answer 1

are you sure the question is complete and correct

Answer 2

is what the problem looks like

Answer 3

now the question is different from what you posted

Answer 4

yeah a tiny bit, go by the picture, the picture is correct. that was an accident

Answer 5

do u know sin2x = 2sinx cosx

Answer 6

sin 2x or sin^2 x?

Answer 7

nvm sin 2x

Answer 8

so sec^2 x = 1/cos^2 x
= (1/cos^2 x) * (sin^2 x/sin^2 x )

Answer 9

(sin^2 x/( cos^2 x *sin^2 x ))
=(4*sin^2 x/(4* cos^2 x *sin^2 x ))
= 4*sin^2 x /(2sinx cosx)^2
= 4*sin^2 x /(sin2x)^2

Answer 10

hope it is clear to you