Binoy kumar mahato
This page lists questions and answers that were posted by visitors named Binoy kumar mahato.
Questions
The following questions were asked by visitors named Binoy kumar mahato.
ifcosX+cosY=a and sinX+sinY=b than prove thatsin2X+sin2Y=2ab(1-2/(a^2+b^2)
8 years ago
if cos(B-C)+cos(C-A)+cos(A-B)=-3/2 then prove that cosA+cosB+cosC=O and sinA+sinB+sinC=O after that prove that cos(B-C)=cos(C-A)=cos(A-B)=-1/2
8 years ago
cos(A-B)+cos(B-C)+cos(C-A)=-3/2 then prove that cos A+cos B+cos C=0 and sin A+sin B+sin C=0 and also prove that cos(A-B)=cos(B-C)=cos(C-A)=-1/2
8 years ago
A=170 degree then prove that Tan A/2=-1-rot(1+Tan^2 A)/Tan A
8 years ago
if tan A/2 =cosecA-sin A then prove cos^2 A/2=cos 36 degree
8 years ago
limit x tends to infinity ( 1+root n)/(1-rootn)
7 years ago
Answers
The following answers were posted by visitors named Binoy kumar mahato.