if cosA*cosecA= $\sqrt{\}$3 , Tita= A+B & cosB=1/2.Then prove "cos(A+B)=cosA*cosB-sinA*sinB

asked by guest
on Nov 15, 2024 at 9:49 pm



Mathbot Says...

I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.


+ Submit Question