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Ahat [919]
2 years ago
8

Cos30° cos45°-sin30° sin 45°​

Mathematics
1 answer:
sammy [17]2 years ago
4 0

Answer:

(√6 - √2)/4

Step-by-step explanation:

cos30°cos45° - sin30°sin45°

= cos (30 + 45)°

= cos 75°

= (√6 - √2)/4

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Number 6 mainly and any other if you want to help:) looka t the pic
soldier1979 [14.2K]
Let the amount B pays be £x
So,
A pays £125
B pays £x
They pay in the ration 3:2
Therefore,
125/x = 3/2
Cross multiplying we get,
125 x 2 = 3x
3x = 250
x = £63.33
3 0
2 years ago
The sum of first 'n' terms. Sn of a particular Arithmetic Progression is given by Sn=12n-2n^2. Find the first term and the commo
Vitek1552 [10]

Answer:

d=-4 and a=10

Step-by-step explanation:

The sum of a arithmetic sequence is given by (n/2)*(2a+(n-1)d). Comparing coefficients with the given Sn, we have; a-d/2=12 and d/2=-2, d=-4 and a=10.

4 0
3 years ago
Write as a polynomial. a(a+9b)^2
Alex Ar [27]
Answer: a^3+81ab^2
First, you square (a+9b) which will become (a^2+81b^2)
Then, you multiply it by a and you will get a^3+81ab^2
4 0
2 years ago
3 shirts cost $54,how much was one shirt?
____ [38]
$18 (if each shirt costs the same, 54/3 = 18)
5 0
2 years ago
Read 2 more answers
What is the smallest integer that rounds to 300 when rounded to the nearest hundred?
aleksley [76]

Answer:

The answer is 250.

Step-by-step explanation:

The smallest integer that can be round off to 300 is 250.

e.g

250

≈ 300

249

≈ 200

7 0
3 years ago
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