MATH Ex 1: Solve a Trig Equation with Rounded Radian Solutions – Angle Substitution Posted on 07/24/202007/24/2020 by apho2018 24 Jul This video explains how to solve a trig equation with a double angle that has rounded radian solutions. Site: Blog: apho2018 Monsoon Chemistry Quotient CBSE Class 12 Physics – Most Important Questions | | 5 Mark Most Expected Questions | CBSE Board