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sin450^@ = …………....

`sin450^@` = ………….

A

4

B

3

C

`-1`

D

1

Text Solution

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sin 450^@ =…………

sin240^@+sin120^@ = ……………

sin 10^(@) sin 30^(@) sin 50^(@) sin 70^(@) sin 90^(@)=

sin 10^(@) + sin 20^(@) + sin 40^(@) + sin 50^(@) - sin 70^(@) - sin 80^(@) =

Show that sin10^(@)+sin20^(@)+sin40^(@)+sin50^(@) =sin70^(@)+sin80^(@)

sin 20^(@) * sin 40^(@) * sin 60^@ * sin 80^(@) =

sin 240^@ + sin 120^@ =