Prove that `sin^(2) 12^circ + sin^(2)21^circ + sin^(2)39^circ + sin^(2)48^circ = 1 + sin^(2)9^circ + sin^(2)18^circ`

Prove that sin 1^circ lt sin 1 .

Prove that sin 55^circ - sin 19^circ + sin 53^circ - sin 17^circ = cos 1^circ

The value of (4 tan^(2) 30^circ + 1/4 sin^(2)90^circ + 1/8 cot^(2)60^circ + sin^(2)30^circ cos^(2)45^circ)/ (sin 60^circ cos30^circ - cos60^circ sin30^circ) is : (4 tan^(2) 30^circ + 1/4 sin^(2)90^circ + 1/8 cot^(2)60^circ + sin^(2)30^circ cos^(2)45^circ)/ (sin 60^circ cos30^circ - cos60^circ sin30^circ) का मान है:

Prove that: sin^(2)12^(@)+sin^(2)21^(@)+sin^(2)39^(@)+sin^(2)48^(@)=1+sin^(2)9^(@)+sin^(2)18^(@)

The numerical value of sin^(2)5^circ + sin^(2)10^circ + sin^(2)15^circ + . . . + sin^(2)90^circ=.........

The value of (tan 29^circ cot61^circ - cosec^2 61^circ) + (cot^2 54^circ - sec^2 36^circ) + (sin^2 1^circ + sin^2 3^circ + sin^2 5^circ +......+ sin^2 89^circ) is: (tan 29^circ cot61^circ - cosec261^circ) + cot254^circ - sec236^circ +(sin 21^circ + sin 23^circ + sin 25^circ +......+ sin 289^circ) का मान है :

What is the value of cosec (65^circ+ θ) – sec(25^circ – θ) + tan^(2)20^circ – cosec^(2)70^circ ? cosec (65^circ+ θ) – sec(25^circ – θ) + tan^(2)20^circ – cosec^(2)70^circ का मान क्या है?

Prove that: sin12^(@)sin48^(@)sin54^(@)=1/8

The value of ((sin(78^circ +θ) - cos (12^circ +θ) +(tan^(2)70^circ - cosec^(2)20^circ))/ (sin 25^circ cos 65^circ + cos 25^circ sin 65^circ) is: ((sin(78^circ +θ) - cos (12^circ +θ) +(tan^(2)70^circ - cosec^(2)20^circ))/ (sin 25^circ cos 65^circ + cos 25^circ sin 65^circ) का मान है :