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sin^(2)5 + sin^(2)10 +sin^(2)15 +... +si...

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

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sin^(2) 75^(@) - sin^(2)15^(@)=

sin^(2)5^@+sin^(2)10^@+sin^(2)15^@ +.......+sin^(2)85^@ + sin^(2)90^@=

sin^(2)5^@+sin^(2)10^@+sin^(2)15^@ +.......+sin^(2)85^@ + sin^(2)90^@= ............ A) 7 B) 8 C) 9 D) 9(1)/(2)

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

sin ^(2) 5 ^(@) + sin ^(2) 10 ^(@) + sin^(2) 15 ^(@) + ... + sin ^(2) 90^(@) is equal to : a) 8 (1)/(2) b) 9 c) 9 (1)/(2) d) 4 (1)/(2)

sin ^ (2) 5 ^ (@) + sin ^ (2) 10 ^ (@) + sin ^ (2) 15 ^ (@) + ...... + sin ^ (2) 85 ^ (@) + sin ^ (2) 90 ^ (@) =

sin^(2)5^(@)+sin^(2)10^(@)+sin^(2)15^(@)+ .....+sin^(2)85^(@)+sin^(2)90^(@) is equal to

Show that sin^(2)5^(@)+sin^(2)10^(0)+sin^(2)15^(0)+...+sin^(2)90^(@)=9(1)/(2)