02-02-2019
Mathematics

contestada

The value of cos 30° is the same as which of the following?

Respuesta :

eric271828 eric271828

02-02-2019

cos 30 can be written as 1/2. If you are not sure, you can use subtraction formula: sin(A-B) = sinAcosB - cosAsinB

Answer Link

Otras preguntas

A company had the following purchases and sales during its first year of operations: Purchases Sales January: 10 units at $120 6 units February: 20 units at $1

MATH PERCENTAGE QUESTION HELP! 1. 27400 spectators in a 40000 seat stadium percentage?2. an archer scores 95 points out of a possible 125 points percentage?

Identify the radius and the center of a circle whose equation is (x – 5)² + y² = 81. The radius of the circle is units. The center of the circle is at

Consider the matrix [tex]A_{4x4}, det(A) = -2[/tex]Show that the following is true or false:[tex]det(adj(2A^{-1}) =-2^{9}[/tex]

What is the so called "democracy deficit" in the EU?

True OR False---------------------x + 65 = 87, x = 27?

express 3256 as the product of power of 10

The diagram shows a cone with slant height 10.5cm. If the curved surface area of the cone is 115.5cm². calculate correct to 3 Significant figures, the base radi

One of the five quadratics below has a repeated root. (The other four have distinct roots.) What is the repeated root?$\begin{align*}&-x^2 + 18x + 81 \\&

Graph the line with slope 1/4 and y-intercept -8