Answer the following:Which is greater `sin(1856^@)`or `sin(2006^@)`?

Answer the following:State the signs of: sin986^@

Answer the following:Which of the following is positive? sin(-310^@)orsin(310^@)

Select and write the correct answer from the given alternatives in each of the following:Thevalue of sin^2(5^@)+sin^2(10^@)+sin^2(15^@)+………..+sin^2(85^@)+ sin^2(90^@) is equal to

Prove the following: (frac(sin^2(-160^@))(sin^2 70^@))+(frac(sin(180^@-theta))(sintheta))=sec^2 20^@

sin(45^@+A)sin(45^@-A)=

Prove the following: sin47^@+sin61^@-sin11^@-sin25^@=cos7^@

Solve the following: If A+B+C=pi ,prove that sin(B+2C)+sin(C+2A)+sin(A+2B)= 4sin((B-C)/2)sin((C-A)/2)sin((A-B)/2)

Which one of the following number (s) is/are rational? - 1) sin 15^(@) 2) cos 15^(@) 3) sin 15^(@) cos 15^(@) 4) sin15^(@) cos 75^(@)