# trig

posted by
**kalpana**
.

if a and b are acute angels and sin(a+b)=1,sin(a-b)=1/2

then prove that

(1)tan(a+2b)=-(3)1/2

posted by
**kalpana**
.

if a and b are acute angels and sin(a+b)=1,sin(a-b)=1/2

then prove that

(1)tan(a+2b)=-(3)1/2