यदि sec 5A = cosec (A - 30°) हो तथा 5A एक न्यून कोण हो तो A = ? - - Yadi sec 5A = cosec (A - 30°) Ho Tatha 5A Ek Nyun Kon Ho To A = ? Maths in hindi, trigonometry 12° question answers in hindi pdf 20° questions in hindi, Know About 60° Maths online test Maths notes in hindi quiz book 30°