" (ii) "(sin10^(@)-cos80^(@))=?

sin10 5^(@)+cos10 5^(@)=

What is the value of |(sin 10^(@)-cos 10^(@)),(sin 80^(@),cos 80^(@))| ?

The value of the expression (sin80^(@)-cos80^(@)) is negative.

State True or False: The value of the expression (sin80^(@)-cos80^(@)) is negative.

If the value of expression (2cos10^(@)-cos50^(@))/(sin70^(@)-cos80^(@)) is m then (3m^(2)-4) is equal to

Evaluate |(sin 10^(@) -cos 10^(@)),(sin 80^(@) cos 80^(@))|

1/(sin10^(@))-sqrt3/(cos10^(@))=

Show that |{:("sin"10^(@), -"cos"10^(@)), ("sin"80^(@), "cos"80^(@)):}| =1.

Prove that (i) sin 70^(@) cos 10^(@) -cos 70^(@) sin 10^(@) =(sqrt(3))/(2) (ii) cos 50^(@) cos 10^(@) -sin 50^(@) sin 10^(@) =(1)/(2) (ii) cos 80^(@) cos 20^(@) + sin 80^(@) sin 20^(@) =(1)/(2) (iv) sin 36^(@) cos 9^(@) + cos 36^(@) sin 9^(@) =(1)/(sqrt(3))

Prove that sin 50^(@)-sin 70^(@)+cos 80^(@)=0 .