# Solve the Following Equations for A, If : 2 Sin a = 1 2 Cos 2 a = 1 Sin 3 a = Sqrt3 /2 Sec 2 a = 2 Tan a = 1 Sqrt3 Tan 3 a = 1 2 Sin 3 a = 1 Sqrt3 Cot 2 a = 1 - Mathematics

Sum

Solve the following equation for A, if 2 sin A = 1

#### Solution

2 sin A = 1
sin A = (1)/(2)
sin A = sin 30°
A = 30°

Concept: Trigonometric Equation Problem and Solution
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#### APPEARS IN

Selina Concise Mathematics Class 9 ICSE
Chapter 23 Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios]
Exercise 23 (C) | Q 1.1 | Page 297