Question

(tan a + cot a)2 = 4+ (tan a - cot a)2

Answer 1

Answer:

cot a= 1

Step-by-step explanation:

(tan a + cot a)2= 4+(tan a - cot a)2

2 tan a + 2 cot a = 4+ 2 tan a - 2 cot a

2 tan a - 2 tan a + 2 cot a + 2 cot a = 4

4 cot a = 4

cot a = 1