`(2cos4 0^(@)-cos2 0^(@))/(sin2 0^(@)`

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

(2cos 40^0-cos 20^0)/(sin 20^0)=

(cos^(2)1^(0)-cos^(2)2^(0))/(2sin3^(0)*sin1^(0)) is equal to

Prove that: (cos^(2)33^(@)-cos^(2)57^(0))/((sin^(2)(21^(0)))/(2)-(sin^(2)(69^(0)))/(2))=-sqrt(2)

The value of (cos^(2)33^(0)-cos^(2)57^(0))/(sin21^(0)-cos21^(0)) is

If cos56^(0)+cos58^(0)-cos66^(0)-4cos28^(0)-cos29^(@)sin33^(@)=lambda then |2 lambda|=

Show that sin70^(0)cos10^(0)-cos70^(0)sin10^(0)=(sqrt(3))/(2)

Evaluate : 4(sin^4 30^0+cos^4 60^0)-2/3(sin^2 60^0-cos^2 45^0)+1/2tan^2 60^0

Evaluate : [{:(,4 sin 30^@ 2 cos 60^@), (,sin 90^@ 2 cos 0^@):}] [{:(,4,5),(,5,4):}]