Question

Tan²a+ cot²a. = 4 find calu of tan⁴+ cot⁴

Answer 1

Answer:

14

Step-by-step explanation:

Tan²a+cot²a=4

or(Tan²a+cot²a)²=4²

or Tan⁴a+cot⁴a+2×tan²a×cot²a=16

or Tan⁴a+ cot⁴a+2×tan²a×1/tan²a=16

or Tan⁴a+cot⁴a+2=16

or Tan⁴a+cot⁴a=16-2

or Tan⁴a+cot⁴a=14