`sin 67(1)/(2)^(@)+cos67(1)/(2)^(@)` is equal to

sin (67(1)/2)^(@)+cos(67(1)/2)^(@) is equal to

sin (67(1)/(2))^(@)+cos(67(1)/(2))^(@) is equal to

sin( 67 1/2)^(@) + cos( 67 1/2)^(@) is equal to A) 1/2sqrt(4+2sqrt(2)) , B) 1/2sqrt(4-2sqrt(2)) , C) 1/4(sqrt(4+2sqrt(2))) , D) 1/4(sqrt(4-2sqrt(2)))

sin(67 1/2)^(@) + cos( 67 1/2)^(@) is equal to A) 1/2sqrt(4+2sqrt(2)) , B) 1/2sqrt(4-2sqrt(2)) , C) 1/4(sqrt(4+2sqrt(2))) , D) 1/4(sqrt(4-2sqrt(2)))

tan 67 (1^(@))/(2) + cot 67 (1^(@))/(2) equals

cos^(-1)(1/2)+2sin^(-1)(1/2) is equal to

" (2) "sin^(-1)x+sin^(-1)(1/x)+cos^(-1)x+cos^(-1)(1/x)" is equal to "

(cos^(2)1^(0)-cos^(2)2^(0))/(2sin3^(0)*sin1^(0)) is equal to