Question

Как решать (x2), какие формулы для тригонометрических выражений используются?

Answer 1

=2, уже отвечал на эту задачу. Табличные значения стандартных углов

Answer 2

Solving (x^2) and Trigonometric Formulas

To solve for \(x^2\), you can use the formula \(x^2 = x \times x\). This means that you multiply the value of \(x\) by itself to get the result.

Trigonometric Formulas: Trigonometric expressions involve functions such as sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc). The basic trigonometric formulas include:

1. Sine and Cosine: - The Pythagorean identity: \(sin^2(x) + cos^2(x) = 1\). - Double angle formulas: \(sin(2x) = 2sin(x)cos(x)\) and \(cos(2x) = cos^2(x) - sin^2(x)\).

2. Tangent and Cotangent: - The relationship between tangent and cotangent: \(tan(x) = \frac{sin(x)}{cos(x)}\) and \(cot(x) = \frac{cos(x)}{sin(x)}\).

3. Secant and Cosecant: - The relationship between secant and cosecant: \(sec(x) = \frac{1}{cos(x)}\) and \(csc(x) = \frac{1}{sin(x)}\).

These formulas are fundamental for solving trigonometric equations and manipulating trigonometric expressions.