Evaluate sin 60° cos 30° + sin 30° cos 60°

Evaluate: sin 24 / cos 66

Evaluate cos 12^(@) -sin 78^(@)

Find the values of sin 30^(@) ,cos 30 ^(@) ,tan 30 ^(@) ,cosec 30^(@) ,sec 30 ^(@) and cot 30^(@)

Evaluate (tan^2 60 + 4 cos^2 45 + 3 sec^2 30 + 5 cos^2 90)/(cosec 30 + sec 60 - cot^2 30)

Is it true to say that cos(60^@ + 30^@) = cos 60^@ cos 30^@ + sin 60^@ sin 30^@

Evaluate the following: sin 30^@ + cos^2 30^@ - cot^2 45^@ .

Find the value of sin 330^(@) .cos 120^(@) + cos 210^(@) . Sin 300^(@) .

"Evaluate "Delta ={:[( 0 , sin alpha ,-cos alpha ) ,( -sin alpha , 0 , sin beta ),( cos alpha , -sin beta , 0)]:}

The value of sin^2 60^@ -sin^2 30^@

Find the value of cos45°∕ sec30°+cosec60°