यदि sin 3A = cos (A - 10°) हो तो 3A एक न्यून कोण हो तो A = ? - - Yadi sin 3A = cos (A - 10°) Ho To 3A Ek Nyun Kon Ho To A = ? Maths in hindi, trigonometry 25° question answers in hindi pdf 50° questions in hindi, Know About 40° Maths online test Maths notes in hindi quiz book 30°