dontaviangreer2673 dontaviangreer2673

14-09-2022
Mathematics

contestada

Use a double-angle identity to find the exact value of sin 120° .

Respuesta :

Medunno13 Medunno13

14-09-2022

Answer:

[tex]\frac{\sqrt{3}}{2}[/tex]

Step-by-step explanation:

[tex]\sin 2x=2\sin x \cos x \\ \\ \sin 120^{\circ}=2\sin 60^{\circ} \cos 60^{\circ} \\ \\ =2(\sqrt{3}/2)(1/2) \\ \\ =\frac{\sqrt{3}}{2}[/tex]

Answer Link

Otras preguntas

A furniture company in the United States works with a plant in India to make wooden desks. The U.S. company designs the desks, and the manufacturer in India mak

Write the symbol for each of the following ions: (a) the ion with a 3+ charge, 28 electrons, and a mass number of 71 (b) the ion with 36 electrons, 35 protons,

Mounting evidence indicates that in healthy older adults, __________ predict(s) decrements in reaction time and other cognitive abilities.

The Department of Defense publishes pay charts for enlisted and officer pay. This indicates the level of ______ in the DOD. A. pay compressionB. pay secrecy C.

The difficulty organizations are facing with e-commerce is that consumers are not coming back to the website and purchasing more. One reason for the difficulty

use ΔABC to find the value of tan b

A police officer who has classist beliefs about who is most likely to use drugs might focus her policing in poor neighborhoods or handle teens from rich neighbo

Make the conversion indicated ineach of the following: (a) The length of a soccer field, 120 m (three significant figures), to feet (b) the height of Mt. Kilima

A chef is going to use a mixture of two brands of Italian dressing. The first brand contains vinegar, and the second brand contains vinegar. The chef wants to m

The infinite sequence $T=\{t_0,t_1,t_2,\ldots\}$ is defined as $t_0=0,$ $t_1=1,$ and $t_n=t_{n-2}+t_{n-1}$ for all integers $n>1.$ If $a,$ $b,$ $c$ are fixed