" 4.सिद्ध कीजिए कि "(cos17+sin17)/(cos17-sin17)=tan62

(cos 17^(@) + sin 17^(@))/(cos 17^(@) - sin 17^(@))=

( cos 17^(@) + sin 17^(@))/( cos 17^(@) - sin 17^(@)) = tan 62^(@)

(cos(17^(@))+sin(17^(@)))/(cos(17^(@))-sin(17^(@)))= …………

(sin30^(@)17)/(cos59^(@)43)

(cos 17^(@) + sin 17^(@))/(cos 17^(@) - sin 17^(@))= ................ A) tan 62^(@) B) tan 56^(@) C) tan 54^(@) D) tan73^(@)

sin (17 (pi) / (3))

sin47^(@)+cos77^(@)=cos17^(@)

" The exact value of the expression "cos(12 pi/17)+cos(14 pi/17)+2cos(4 pi/17)cos(pi/17)" is "

Prove that : (cos 9x - cos 5x)/(sin 17x -sin 3x)=- (sin 2x)/(cos 10x) .