Question

if 41 sin a = 40 find the value of 1-cot^a/ 2 cot a​

Answer 1

Answer:

1519 / 720

Step-by-step explanation:

41 sin a = 40

sin a = 40 / 41

cos a = √(1 - sin^2)

= √(1 - 1600/1681)

= 9/41

cot a = cos a /sin a = 9 / 40

1-cot^2 a/ 2 cot a

= (1 - 81/1600) / (2*9 /40)

= 1519 / 720