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sergij07 [2.7K]
4 years ago
11

Please help with number 4 please !!

Mathematics
1 answer:
madam [21]4 years ago
7 0
The lower-left statement is a statement of the Associative Property of Addition. The others are statements of the Commutative Property of Addition. It appears the lower-left statement "doesn't belong".
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Ok maths experts ,here is your trigonometric question
EleoNora [17]

Answer:


Step-by-step explanation:

i don't take trig :/

6 0
3 years ago
Sin x = - 1/2<br> where (-360 &lt; x &lt; 360)
dimulka [17.4K]

Answer:

-30, 210 and 330 degrees

Step-by-step explanation:

Given the expression Sin x = - 1/2

x = arcsin(-1/2)

x = -30 degrees

Since sin is negative in the third and fourth quadrant

x = 180 + 30

x = 210 degrees

In the fourth quadrant

x = 360 - 30

x = 330

Hence the value of x within the interval -360 < x < 360 are -30, 210 and 330 degrees

3 0
3 years ago
¿Cuantos minutos tiene un día?
zlopas [31]
How many minutes are in a day?
8 0
3 years ago
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The shadow of a 60 foot pole is a 100 feet long. What is the angle of evaluation from the end of the shadow to the top of the po
Lilit [14]

Answer:

θ = 36.86°

Step-by-step explanation:

Given that,

The shadow of a 60 foot pole is a 100 feet long.

We need to find the angle of elevation from the end of the shadow to the top of the pole.

Height, h = 60 foot

Hypotenuse, H = 100 feet

Using trigonometry to find it.

\sin\theta=\dfrac{\text{Height}}{\text{Hypotenuse}}\\\\\sin\theta=\dfrac{60}{100}\\\\\theta=\sin^{-1}(\dfrac{60}{100})\\\\\theta=36.86^{\circ}

So, the angle of elevation is 36.86 degrees.

4 0
3 years ago
Here's a question for the day, it's simple but it needs explaining.
GuDViN [60]
It is used to see if a graph represents a function because if there is 2 dots or intersecting lines within the other lines then it is not a function. if there is only one line or dot, then yes, it is a function. hope i explained it well.
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3 years ago
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