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hichkok12 [17]
3 years ago
10

What is the exact value of sin(105degrees)?

Advanced Placement (AP)
1 answer:
DochEvi [55]3 years ago
3 0
Sin (105) = sin (15+90)= cos 15- ℎ ℎ

Explanation:
sin(105) = sin (60+45) because sin (a +b)= sin a • cos b+ cos a• sin b

Therefore,

sin 105= sin (60+45) = sin 60• cos 45 + cos 60 • sin 45 =


The picture below is your answer.

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1201008

Explanation:

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Doubling Time is what ? (Definition Needed and Explanation)
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Explanation:

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3 years ago
How many trees were harvested in 2014
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Which of the following best explains why income alone doesnt alone doesnt determine wealth
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7 0
3 years ago
-6x+5y=8 2x-4y=2 i need a x,y answer and i need some steps too
Advocard [28]

Answer:

I. x = -3

II. y = -2

Explanation:

Given the following algebraic equation;

-6x + 5y = 8 .........equation 1

2x - 4y = 2 ..........equation 2

We would solve the algebraic equation using the substitution method

From equation 1;

5y = 8 + 6x

y = \frac {8 + 6x}{5} .....equation 3

Substituting eqn 3 into eqn 2, we have;

2x - 4(\frac {8 + 6x}{5}) = 2

2x - \frac{32 + 24x}{5} = 2

Multiplying all through by 5

10x - 32 - 24x = 10

Rearranging the equation, we have:

10x - 24x = 10 + 32

-14x = 42

x = \frac {-42}{14}

x = -3

Next we find the value of y;

From eqn 3;

y = \frac {8 + 6x}{5}

Substituting the value of "x" into the equation, we have;

y = \frac {8 + 6*(-3)}{5}

y = \frac {8 - 18}{5}

y = \frac {-10}{5}

y = -2

8 0
2 years ago
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