Home
Class 11
MATHS
[" (ii) "cos80^(@)+cos40^(@)-cos20^(@)=0...

[" (ii) "cos80^(@)+cos40^(@)-cos20^(@)=0],[" iii) "sin10^(@)+sin20^(@)+sin40^(@)+sin50^(@)=sin70^(@)+sin80^(@)],[" (iv) "cos20^(@)+cos100^(@)+cos140^(@)=0]

Promotional Banner

Similar Questions

Explore conceptually related problems

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

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

prove that sin10^(0)+sin20^(0)+sin40^(@)+sin50^(0)=sin70^(0)+sin80^(@)

(cos20^(@)+8sin10^(@)sin50^(@)sin70^(@))/(sin^(2)80^(@))=

cos20^(@)cos40^(@)-sin5^(@)sin25^(@)=

(2cos40^(@)-cos20^(@))/(sin20^(@))=?

(2cos40^(@)-cos20^(@))/(sin20^(@))

(2cos40^(@)-cos20^(@))/(sin20^(@))

(sin70^(@)+cos40^(@))/(cos70^(@)+sin40^(@))

(sin 70^(@) + cos 40^(@))/(cos 70^(@) + sin 40^(@))=