If `a`, `B`, `C` are positive acute angles and `tanA=4/7`, `tanB=1/7`, `tanC=1/8`, prove that `A+B+C=45`

If A,B,C are positive acute angles and tan A =4/7, tanB =1/7, tanC=1/8,"prove that" A+B+C = 45^(@)

If A,B,C are positive acute angles and tan A=4/7 and tan B=1/7,tan C=1/8 prove that A+B+C=45^@

If a,B,C are positive acute angles and tan A=(4)/(7),tan B=(1)/(7),tan C=(1)/(8), prove that A+B+C=45

If tanA=1/7 and tanB=1/3 , prove that: cos2A= sin4B

If tanA=1/3 and tanB=1/7 , show that 2A+B=45^@

In an acute-angled triangle ABC, tanA+tanB+tanC

In an acute-angled triangle ABC, tanA+tanB+tanC

If A and B are positive acute angles and sinA =3/5,cosB=(15)/(17) , find the value of (tanA-tanB)/(1+tanAtanB) .

If tanA=13/27 , tanB=7/20 and A,B are acute, show that A+B = 45^@