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qwelly [4]
2 years ago
11

Suppose sin a = 12/13 and sin b= 5/11. FInd cos(a+b)

Mathematics
1 answer:
m_a_m_a [10]2 years ago
6 0

Answer:

1.28 or 912/715

Step-by-step explanation:

sine= opposite side/hypotenuse

cos=adjacent/ hypotenuse

sine a= 12/13 using the Pythagorean Theorem and solve for the missing side. (which is the adjacent side)

cos a = 5/13

Do the same for sine b

cos b= 9.8/11

add both the cosine value

(5/13)+(9.8/11)=1.28 or 912/715 in fraction form

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kirill [66]
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7 0
3 years ago
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I NEED TO HAND IN NOW!!!
umka21 [38]

Step-by-step explanation:

a)

total no. of pupils is not more than 24

therefore first equation is

(x+y) ≤ 24. ....(1)

No. of girls exceeding the no. of boys by atleast 4

(y-x) ≥ 4. .....(2)

b) Now Liza chooses 8 boys

Maximum no. of girls = ?

Using first inequality

y+8= 24 ( maximum value of less than or equal to function is equal to itself)

Therefore,

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Using second inequality

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Therefore,

y= 4+8

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Answer:

a) 2linear inequalities

(x+y) ≤ 24

(y-x) ≥ 4

b) Max no. of girls = 16

Min no. of girls = 12

Hope it helps...

5 0
3 years ago
What is the best way to display data if there is a wide range and we want to see individual data?
Novosadov [1.4K]
Answer:
The correct option is;
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Step-by-step explanation:
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Answer:

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3 0
3 years ago
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So, .05 x 229 = 11.45

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4 0
3 years ago
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