Question

8) If Sin A = 3/5 & A is in II quadrant find tan (A/2)​

Answer 1

Answer:

Sin A = 35 , AE Q2 cos A = 45 Then, 2cos^2 A2 - 1 = cos A 2cos^2 A2 - 1 = 45 2cos^2 A2 =1 - 45 15 cos^2 A2 = 110 ( as A E Q2 , A/2 E Q1 ) Ans cos A/2 = + 1/√10