jtkgotosleep123 jtkgotosleep123

01-12-2020
Mathematics

contestada

what is the exact value of cos(11pi/21)cos(pi/7)-sin(11pi/21)sin(pi/7)?

a. -squr3/2
b. -1/2
c. 1/2
d. squr3/2

Respuesta :

funnymunchies2004 funnymunchies2004

07-12-2020

Answer:

B

Step-by-step explanation:

-1/2

Answer Link

camjjwo camjjwo

12-06-2021

Answer:

B -1/2

Step-by-step explanation:

Answer Link

Otras preguntas

need help ASAP PLEASE!!!!!!!!!!!!!!!!!!!!!!

what's better cod liver oil or fish oil?

Three times the sum of a number and -2 is -15. find the number

Rhia is using the above equation to investigate the carbon footprint, ccc, in kilograms of carbon dioxide (co_2)(co 2 )left parenthesis, c, o, start subscript

Help with this math problem!

Write an equation of the line below.

In rwanda, a farmer is hiding a group of persecuted tutsis from a hutu military commander. the farmer believes that he has to always tell the truth, and that th

QUESTION 6 What is the mean of the following set of data? Round your answer to two decimal places. 78, 82, 91, 100, 78, 92, 82, 77, 80 a. 91.21 b.

If sales are $425,000, variable costs are 62% of sales, and operating income is $50,000, what is the contribution margin ratio? select one: a. 38% b. 26.8% c. 1

sebastian decides to open a tree farm. when deciding to open his own business, he turned down two separate job offers of $25,000 and $30,000 and withdrew $20,0