Question

If cotA+1/cotA=2.Find cot^2+1/cot^2​

Answer 1

Answer:

let x=cotA

then x+1/x=2

squaring on both sides we get

x2+1/x2+2=4

so x2+1/x2=2

substituting x=cotA in above expression we get

cot2A+1/cot2A=2

Step-by-step explanation: