Find the value of B between 0 degree and 360 degree which satisfy the equation 4Cos²B 2CosB=1

QuestionsCategory: MathsFind the value of B between 0 degree and 360 degree which satisfy the equation 4Cos²B 2CosB=1
Sandy Spencer asked 4 months ago
Find the value of B between 0 degree and 360 degree which satisfy the equation 4Cos²B+2CosB=1

1 Answers
Sandy Spencer answered 4 months ago
4 Cos²B + 2 CosB – 1 = 0

use the quadratic formula to find the values of CosB