Question

tan(x+y). tan (x-y) =1
हो, तो tan(2x/3)=?​

Answer 1

Answer:

we know that tan 45 =1

so,

x+y=45

and

x-y =45

adding two equation

x+y+x-y =45 +45

2x=90

x=45

putting this value in tan (2x/3)

2*45/3

2*15

30

and we know that value of tan 30 is

$1 \div \sqrt{3}$