Question

Find the angles A , B , C if tan ( A + B - C ) = 1 , sin ( B + C – A ) = 1 ,
cos ( C + A – B ) = 1
plss answer the question correctly​

Answer 1

Answer:

tan(A+B-C)=1 means a+b-c=45 equation no. 1

similarly b+c-a=90 equation no 2

c+a-b=0 equation no. ,3

There are three unknowns and three equations, so you can find the values of a,b and c

Add all three, you will get

a+b+c=135

From this subtract 1st equation, you will get

2c=90, c=45

similarly you can get values of and b