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TEA [102]
3 years ago
5

If a and b are two angles in standard position in Quadrant I, find cos(a+b) for the given function values. sin a=3/5and cos b=12

/37
1) 153/185

2) 57/185

3) -57/185

4) -153/185
Mathematics
2 answers:
VLD [36.1K]3 years ago
7 0

See my answer to your other question for more details (26127939).

We found that cos(a) = 4/5 and sin(b) = 35/37. Then

cos(a + b) = cos(a) cos(b) - sin(a) sin(b)

cos(a + b) = 2/37 • 4/5 - 3/5 • 35/37

cos(a + b) = -57/185

insens350 [35]3 years ago
6 0

You have to find the cos of angle A, so use the Pythagorean equation and trig laws to find the other side of the triangle created by angle A. 3^2 + x^2 = 5^2. x=4. This means cos(A) = 4/5). Make both cos (A) and cos (B) have equal denominators, and add. 148/185 + 60/185 = 208/185. This answer is correct, though it doesn’t appear to be any of the answers you wrote, so either those answers are wrong or you wrote something incorrectly in the problem.

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Thepotemich [5.8K]
The correct answer are

Sue interest : 169.6061952

Bill interest: 189.9131472


B. Bill will get more interest then sue


Explain


Sue principal balance p= 2300

Interest for 3 years so t= 3

Interest is compounded yearly n= 1

R= 2.4%

A= 2300(1+2.4/100)^3 = 2300(1+0.024)^3 = 2300 x (1.024)^3 = 2469.6061952

Interest for 3 year is A-p= 2469.6061952 -2300

169.6061952





Bill principle p= 1800

Interest for 3 years t= 3

Interest compounded so n= 1

R= 3.4%


A= 1800(1+3.4/100)^3 = 1800 (1+0.034)^3 = 1800 (1.034)^3 = 1989.9131472

Interest in 3 yrs = 1989.9131472 - 1800 =

189.9131472



For B is below

Hopefully this help you :D

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4 years ago
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Answer:

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Step-by-step explanation:

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Smaller particles moved by the wind occurs through deflation is "True".

<u>Answer:</u> Option A

<u>Explanation:</u>

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These loose material belongs from plain areas of dry, uncemented sediments like which are present in dry lake beds, deserts, floodplains etc.

Deflation differs from wind abrasion because of the effect of particles borne by wind as the method of grinding away a solid object. Deflation reduces the surface of the soil which may produce a blowout which is a depression created by wind erosion on the surface of the land.

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