`sin4 0^(@)-sin20 0^(@)+sin28 0^(@)=`

tan20^(0)+4 sin20^(0)=

Prove that: sin20^(0)sin40^(0)sin60^(@)sin80^(@)=(3)/(16)

Prove that: sin20^(@)sin40^(0)sin60^(@)sin80^(@)=(3)/(16)

sin20^(0)sin40^(0)sin60^(0)sin80^(@)=(3)/(16)

(cos20^(0)+8sin70^(0)sin50^(@)sin10^(0))/(sin^(2)80^(@)) is equal to

Prove that sin 20^(@) + sin 140^(@)-cos 10 ^(@) =0

Write the value of the expression 1-4sin10^(0)sin70^(@)2sin10^(0)

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

cos4 0^(@)+cos2 0^(@))=3(cos1 0^(@)+sin2 0^(@)) 40 CUSOUcos 40^@ + cos 20O 4(cos310^@ + sin320^@) = 3(cos 10^@ + sin20^@)N3.1 = 4

Assertion (A) : cos20^(@) - sin20^(@) gt 0 Reason (R) : If theta in R, cos theta - sin theta gt 0 choose the correct answer