Question

If
cos o = 0.28
find tan
theta/2​

Answer 1

Step-by-step explanation:

$cos(θ) = 0.28 \\ now \: \\ tan ^{2} ( \frac{(θ)}{2} ) = \frac{1 - cos(θ)}{1 + cos(θ)} \\ = \frac{1 - {(0.28)}^{2} }{ {1 + (0.28)}^{2} } \\ = \frac{1 - 0.0784}{1 + 0.0784} \\ = \frac{0.9216}{1.0784} \\ tan \frac{(θ)}{2} = \sqrt{ \frac{0.9216}{1.0784} } \\ = \frac{0.96}{1.03} = 0.93$