`cos^2 52 (1/2)^(@)-sin^2 22 (1/2)^@=`

sin^2 52 1/2^@-cos^2 7 1/2^@

sin [22(1/2)]^o is:

Find the value of cos^(2)112(1)/(2^(@))-sin^(2)52(1)/(2^(@))

Find the value of sin^(2)82(1)/(2^(@))-sin^(2)22(1)/(2^(@))

sin ^ (2) 52 (1) / (2) -sin ^ (2) 22 (1) / (2) =

Prove that sin^(2)52 1/2-sin^(2)22 1/2 .

Find the value of cos^(2)112 1/2-sin^(2)52 1/2 .

Find the value of sin^(2)82 1/2-sin^(2)22 1/2 .

(sin ^ (2) (22 (1) / (2)) ^ (@) + cos ^ (2) (22 (1) / (2)) ^ (@)) / (sin ^ (2) (44 (1) / (2)) ^ (@) + cos ^ (2) (44 (1) / (2)) ^ (@))