The number of degress, grades and radians in an angle are respectively D,G and R. Prove that `(D)/(90)=(G)/(100)=(2R)/(pi).`

The measures of an angle are D and R in degree and radian respectively. Then R/D is equal_____

Two regular polygons have sides m and n respectively . If the number of degrees in an angle of the first is equal to the number of radians in an angle of the second , show that , (n(m-2))/(m(n-2))=pi/(180)

The value of an angle is D in degree and R in radian. Find the value of D/R .

Let ABC be a triangle with incentre I and inradius r. Let D, E, F be the feet of the perpendiculars from I to the sides BC, CA and AB, respectively, If r_(2)" and "r_(3) are the radii of circles inscribed in the quadrilaterls AFIE, BDIF and CEID respectively, then prove that r_(1)/(r-r_(1))+r_(2)/(r-r_(2))+r_(3)/(r-r_(3))=(r_(1)r_(2)r_(3))/((r-r_(1))(r-r_(2))(r-r_(3)))

Let D be the number of degrees , R be the number of radian and G be the number of grades of any angle of the trianlge ABC. Then the required relation among three systems of measurement of an angle is D/(90)=G/(100)=(2R)/(pi) . If angleB=100^g then which one is true ?

Let D be the number of degrees , R be the number of radian and G be the number of grades of any angle of the trianlge ABC. Then the required relation among three systems of measurement of an angle is D/(90)=G/(100)=(2R)/(pi) . if angleA = 30^(@) and angleB = 100^(g) then angleC will be

Let D be the number of degrees , R be the number of radian and G be the number of grades of any angle of the trianlge ABC. Then the required relation among three systems of measurement of an angle is D/(90)=G/(100)=(2R)/(pi) . If angleA =30^@ then which one is true?

If the measurements of an angle in degree minutes and seconds be D ,M and S respectively prove that, S=60 M=3600 D.

The first and the last terms of a G.P are a and k respectively if the number of terms be n prove that n=1+(logk-loga)/(logr) where r is the common ratio

Let A B C be a triangle with incenter I and inradius rdot Let D ,E ,a n dF be the feet of the perpendiculars from I to the sides B C ,C A ,a n dA B , respectively. If r_1,r_2a n dr_3 are the radii of circles inscribed in the quadrilaterals A F I E ,B D I F ,a n dC E I D , respectively, prove that (r_1)/(r-1_1)+(r_2)/(r-r_2)+(r_3)/(r-r_3)=(r_1r_2r_3)/((r-r_1)(r-r_2)(r-r_3))