Find value of a and b for which axsquare - 11x square+ax+b is exatly divisible by x square - 4x - 5
the side bc of a triangle abc is produced such that d is in ray bc. the bisector of angle a bc in l as shown in figure. prove that angle abc+ angle acd =2angle alc
1+cos2theta1/2 -1-cos2theta1/2/1+cos2theta1/2+1-cos2theta1/2 =tan(3.14/4-theta) prove it