Question

cos10-sin10/cos10+sin10

Answer 1

\[\frac{ \cos 10- \sin10 }{ \cos10+\sin10 }*\frac{ \cos10-\sin10 }{ \cos10-\sin10 }\]

Answer 2

\[\frac{ (\cos10-\sin10)^2 }{ (co^210-\sin^210) }\]

Answer 3

\[\frac{ \cos^210+\sin^210-2*\cos10*\sin10 }{ \cos(2*10) }\]

Answer 4

2cosxsinx=sin2*x
cos^2x-sin^2x=cos2*x
sin^2x+cos^2x=1

Answer 5

use these and try this now

Answer 6

1

Answer 7

1 ???

Answer 8

dont think ...just solve

Answer 9

hlo gorv may i knw wher r u frm