" t "quad cos^(2)73+cos^(2)47^(@)+cos73^(@)*cos47=(3)/(4)

sin47^(@)+cos77^(@)=cos17^(@)

The value of 4(cos^(2)73+cos^(2)47+cos73*cos47)

cos45^(@)*cos46^(@)*cos47^(@)*cos135^(@)=

2(cos^(2) 73^(0) +cos^(2)47^(0)) - cos 154^(0) =

What is the value of cos46^(@)cos47^(@)cos48^(@)cos49^(@)cos50^(@)...cos135^(@) ?

cos ^(2) 73^(circ)+cos ^(2) 47^(circ)+cos 73^(circ) . cos 47^(circ)=

Exact value of cos73^(@)+cos^(2)47^(@)-sin^(2)43^(@)+sin^(2)107^(@) is equal to:

The values of cos^(2)73^(0)+cos^(2)47^(0)-sin^(2)43^(0)+sin^(2)107^(0) is equal to: ( b) (1)/(2)(c)(sqrt(3))/(2) (d) sin^(2)73^(@)+cos^(4)73^(@)

The value of (sin43^(@)cos47^(@)+cos43^(@)sin47^(@)) is

The value of (sin43^(@) Cos47^(@) + cos43^(@) sin47^(@)) is …….. .