Question

5. tan^ 2 A+cot^ 2 A+2=sec^ 2 1cos e * c ^ 2 * A

Answer 1

Step-by-step explanation:

tan^2A + 2+cot^2A

= (1+tan^2A)+(1+cot^2A)

= (sec^2A+ cosec^2A)

= (1/(cos^2A) +(1/sin^2A))

= (sin^2A+cos^2A)/(cos^2A*sin^2A)

= 1/(cos^2A*sin^2A)

= (1/cos^2A)*(1/sin^2A)

= sec^2A * cosec^2A