The meaning of TRIGONOMETRY is the study of the properties of triangles and trigonometric functions and of their applications.
The meaning of COSINE is a trigonometric function that for an acute angle is the ratio between the leg adjacent to the angle when it is considered part of a right triangle and the hypotenuse.
The law of cosines relates the lengths of the sides of a triangle to the cosine of one of its angles. Cosine law in trigonometry generalizes the Pythagoras theorem. Understand the cosine rule using examples.
Consider a circle centered at the origin with radius one. The segment from the origin to a point P on the unit circle forms an angle x with the positive x-axis. The abscissa of P is the cosine of x. Cosine Definition In terms of a right triangle, thecosineof an acute angle is a ...
Purpose of Tangent Trigonometry The trigonometric ratios sine, cosine, and tangent are helpful in the sense that they provide information of sides and angles of a right triangle that cannot be obtained otherwise. If an electricity company wants to place two posts in a city and there is a lake...
Purpose of Tangent Trigonometry The trigonometric ratios sine, cosine, and tangent are helpful in the sense that they provide information of sides and angles of a right triangle that cannot be obtained otherwise. If an electricity company wants to place two posts in a city and there is a lake...
We can also multiply and divide complex numbers in trigonometric form. Let’s say we have two complex numbers, z1=r1(cosθ1+isinθ1) and z2=r2(cosθ2+isinθ2), we can find their product by : Multiplying the moduli, r1 and r2. Finding the cosine and sine of θ1...
Trigonometry, the branch of mathematics concerned with specific functions of angles. There are six functions commonly used in trigonometry: sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc). Learn more about trigo
Trigonometric function, in mathematics, one of six functions (sine, cosine, tangent, cotangent, secant, and cosecant) that represent ratios of sides of right triangles. It can be used in problems in which a right triangle’s acute angle and length of one
cosine: In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse.