The Exact Value for Tangent of 15 Degrees - 3 Different Ways - tan(15)

This video works out the exact value of the tangent of 15 degrees three different ways: (i) writing and solving a polynomial equation based on the double-angle identity, (ii) the difference identity for tangent, and (iii) the half-angle identity for tangent. Method 1: 0:19 Method 2: 6:08 Method 3: 9:28 For more math help and resources, visit www.hsmathsolutions.com.