Question

if tanA + cot A = 5 find the value of tan A + cot A ​

Answer 1

Answer:

Step-by-step explanation:

tanA + cotA = 5

(tanA +cotA)2 = tanA2 + cotA2 + 2(tanA * cotA)

25 = tanA2 + cot2A + 2

tanA *cotA = 1

tan2A + cot2A = 23