ArayrNe4renui ArayrNe4renui

13-10-2016
Mathematics

contestada

What is the exact value of cos 5pi/4 radians?

Respuesta :

HomertheGenius HomertheGenius

22-10-2016

π radians = 180°
5 π / 4 = 5 · 180° / 4 = 900° / 4 = 225°
cos ( 5π/4 ) = cos 225°
With the unit circle we can find the exact value:
cos 225° = - √2 / 2 ≈ - 0.7071

Answer Link

Otras preguntas

Find the missing number in this proportion. 7 2 = 4

The exterior of an architectural structure is called the _____________. A. Skeleton c. Facade b. Post-and-lintel d. Shell Please select the best answer from the

What do you think the humanism movement was about? Take into consideration the root word, “human".

Process cost information is prepared for the following reasons. (check all that apply. ).

Tanisk walks around a square-shaped park twice and covers 800 m. What is the area of this park?answer it with full explanation

i’m TERRIBLE at math.. can someone answer this asap

Solve the expression (7th grade math): -3/4x + 18 + 14 - (-2/3x)

Can someone solve this pls

Nicole built a parachute, as seen here. She dropped the parachute from the top of the stairs, and it floated down very quickly. What design changes must she mak

Could anyone give me 5 main details of the book courage to soar by Simone Biles