" 10."quad sin^(2)160^(@)+sin^(2)140^(@)+sin^(2)100^(@)=

sin^(2) 20^(@) + sin^(2) 100^@ + sin^(2) 140^(@) =

Prove that sin^(2)5^(@) +sin^(2)10^(@) + sin^(2)15^(@)+...+sin^(2)90^(@)=(19)/(2)

Find the value of sin^(2)5^(@)+ sin^(2)10^(@)+ sin^(2)15^(@)+* * * +sin^(2)90^(@) .

sin^(2) 5^(@)+sin^(2) 10^(@) +sin^(2)15^(@)+...+sin^(2) 180^(@)=

2 sin 40^(@) sin 10^(@)=

Show that sin^(2)5^(@)+sin^(2)10^(@)+sin^(2)15^(@)+.....+sin^(2)90^(@)=9(1)/(2)

The value of sin^(2)5^(@)+sin^(2)10^(@)+sin^(2)15^(@)+ . . . .+sin^(2)90^(@) is equal to

Find the value of sin^(2)5^(@)+sin^(2)10^(@)+sin^(2)15^(@)+.............+sin^(2)90^(@) .

The value of sin^(2) 1^(@) + sin^(2) 2^(@) + sin^(2) 3^(@)+ . . . . + sin^(2) 89^(@) + sin ^(2) 90^(@) is