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dimaraw [331]
4 years ago
10

Sin a ______ = 1/2 [ sin ( a + b ) + sin ( a - b) ]

Mathematics
1 answer:
Neko [114]4 years ago
6 0

Answer:

Cos b

Step-by-step explanation:

1/2[sin(a+b)+sin(a-b)]

1/2[sin a cos b +cos a sin b + sin A cos B - cos A sin B]

1/2[2sin a cos b]

sin a cos b

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Someone anyone please
Lisa [10]

Answer:

9 or 3^2

Step-by-step explanation:

3^3×3^3=729

3^4=81

729/81 = 9 = 3^2

5 0
3 years ago
Someone pls help me ill give out brainliest pls don’t answer if you don’t know
IrinaVladis [17]

Answer:

16.5

is the rational number between them

Step-by-step explanation:

6 0
4 years ago
What is the gcf of 14 and 22
Phantasy [73]
The multiples of 14 are 1,2,7,14
the multiples of 22 are 1,2,11,22
Therefore 2 is the GCF
7 0
4 years ago
The perimeter of an equilateral triangle is 63 inches. If the length pf each side is (4x-3), write an equation and find the valu
Nady [450]

Answer:

x = 6

Step-by-step explanation:

Givens

There are 3 sides. All are equal to (4x - 3)

Their sum = 63

Formula

3(4x - 3) = 63

Solution

  • 3(4x - 3) = 63            Divide by 3
  • 12x - 9 = 63               Add 9 to both sides
  • 12x = 63 + 9    
  • 12x = 72                    Divide by 12
  • x = 72/12

x = 6                          Answer  

7 0
3 years ago
Find the value of 3p2 – 4p -5, if p= -3
Kazeer [188]

Answer:

-11

Step-by-step explanation:

3 x (-3) x 2 - 4 x (-3) - 5

= -18 + 12 - 5

= -11

3 0
3 years ago
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