# math

posted by
**soumitra**
.

if 0<A<90 and

Sin A+ cos A+ tan A+cot A+sec A+cosec A =7

then prove that sin 2A is a root of (x)^2 -44x-36=0

posted by
**soumitra**
.

if 0<A<90 and

Sin A+ cos A+ tan A+cot A+sec A+cosec A =7

then prove that sin 2A is a root of (x)^2 -44x-36=0