Question

If tan A + cot A=4, Then prove that Tan^4 A + cot^4 A=194No spam answer pleas

Answer 1

Step-by-step explanation:

➡tanA+cotA=4

➡(tanA+cotA)²=16

➡tan²A+cot²A+2=16

➡tan²A+cot²A=14

➡(tan²A+cot²A)²=196

➡tan⁴A+cot⁴A+2=196

➡tan⁴A+cot⁴A=194