icesarwalls41103 icesarwalls41103

21-05-2020
Mathematics

contestada

If cosX = 1/5 and angle x is a positive acute angle, find the value of cos (X/2)

Respuesta :

PollyP52 PollyP52

21-05-2020

Answer:

0.7746.

Step-by-step explanation:

cos x/2 = √ [(1 + cos x) / 2]

= √(1 + 1/5) / 2

= √(6/5) / 2)

= √(6/10)

= 0.7746.

=

Answer Link

Otras preguntas

as electrons pass through a particular device magnets begin to rotate. this rotation is then used to power devices such as ceiling fans this is a description of

what is the coefficient for titanium tetrachloride when the equation below is balanced?

The surface area of sphere T is 452.16 units squared. The surface area of sphere X is 1808.64 units squared. how many times larger is the radius of sphere X th

Jaylen decided to buy a new digital camera that retails for $199. If the store is currently running a promotion on all cameras for 25% off, and the sales tax in

Bethany added a decorative border across the top of each wall of her kitchen. A diagram of her kitchen is shown below. She used a total of 62 feet of border.

Approximately, how many lakes does Texas have? a. 100 b. 150 c. 200 d. 250

Find the center, vertices, and foci of the ellipse. Simplify your answers as much as possible.

What is arizonas democratic process? What is important and what is not?

Explain how muscles are affected by space travel, Enter your answer in the space provided.

The diagram below shows the dimensions of Tessa’s garden. C) Tessa decided that she liked the shape of her garden but wanted to have 2 times the area. She drew