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Alla [95]
3 years ago
6

If angle x=55% and angle y=35, calculate the following 1.cos(x+y) ​

Mathematics
1 answer:
Setler79 [48]3 years ago
4 0

Answer:

cos(X+Y) = cos(55+35) = cos(90) = 0

Step-by-step explanation:

cos(X+Y) = cosXcosY - sinXsinY

cos(55+35) = cos(55)cos(35) - sin(55)sin(35)

cos(55+35) = cos(55)cos(35) - cos(90-55)cos(90-35)

cos(55+35) = cos(55)cos(35) - cos(35)cos(55)

cos(55+35) = 0

cos(90) = 0

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Two physics questions for 80 points! + Brainliest answer :)
Vikki [24]

Answer: Option A

Explanation: The lights that is incident on a mirror will be reflected back as it is a smooth surface and it reflects back the light.

the light will be reflected by the same angle as it was incidented. The angle of incidence can be defined as the angle by which the light ray falls on the surface of the mirror.

The angle by which the light reflects back is known as the angle of reflection. Being a smooth surface light ray is reflected back.

7 0
3 years ago
Find the percent cost of the total spent on each equipment $36, fees $158, transportation $59
maksim [4K]

Answer: Therefore, Option 'A' is correct.

Step-By-Step  explanation:

Since we have given that

Amount spent on equipment = $36

Amount spent on fees = $158

Amount spent on transportation = $59

Total amount spent by them is given by

36+158+59=\$253

Percent cost of equipment of the total amount is given by

\frac{36}{253}\times 100=14.2\%

Percent cost of fees of the total amount is given by

\frac{158}{253}\times 100\\\\=62.45\%

Percent cost of transportation of the total amount is given by

\frac{59}{100}\times 100\\\\=23.3\%

Hence, Percent cost of the total spent on each is

14%, 62%, 23%.

Therefore, Option 'A' is correct.

6 0
2 years ago
Graph on a coordinate plane or explain how to graph: x = 5
Reil [10]
A vertical line through x = 5

6 0
1 year ago
Bob is selling floral arrangements. Each arrangement uses 1 vase and 15 tulips. Each vase costs Bob $4.00. Let C be the total co
crimeas [40]

Answer:

C=34

Step-by-step explanation:

C= 15t + 4

C= 15(2)  + 4

C= 30 + 4

C= 34 :)

Can I have brainliest?

4 0
3 years ago
Writing Describe another method
Vsevolod [243]

Answer: pontos livres

Step-by-step explanation:

o cachorrinho wwss veyry rápido

4 0
2 years ago
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