B1rinmilAmyCanter B1rinmilAmyCanter

06-06-2016
Mathematics

contestada

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

Respuesta :

06-06-2016

-Radical two (square root of two)/2
Because:
5pi/4 = 225 the reference angle for that is 45 degrees, cos 45 = Radical two (square root of two)/2 and because 225 is in quadrant three and only tangent is positive in quadrant 3, the cos is negative

Answer Link

Otras preguntas

6 + y is a monomial.

arrange these numbers in order of size from smallest to largest 15.36 15.07 51.9 5.8 5.62 5.07 brainliest

how to write speech

According to the expenditure approach, if Y is GDP, C is consumption, I is investment, G is government purchases, and NX is net exports, the national income ide

Right or wrong... what process was attributed to the phreatic or steam-driven violent eruption of Kilauea in 1924

Are common abbreviations such as lol and imho and all-lowercase writing acceptable in texting or instant messaging for business?

Please answer this correctly

Q3. A student plans a method to prepare pure crystals of copper sulfate. The student's method is 1. Add one spatula of calcium carbonate to dilute hydrochloric

Hi, I’m really confused if anyone could help me out that would mean a lot?:)

What does sampling accomplish? Choose all thatapply.1. It measures sound at regular intervals.2. It records a close approximation of sound.3. It converts digita