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Grace [21]
3 years ago
7

I really need help with this angle of elevation and depression

Mathematics
1 answer:
AnnyKZ [126]3 years ago
3 0

Answer:

Step-by-step explanation

But the question does not say exactly what should be solve for.

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Write the expression as the sine, cosine, or tangent of an angle. sin 5x cos x - cos 5x sin x
mrs_skeptik [129]

Answer:

sin 5x cos x - cos 5x sin x = sin(4x)

Step-by-step explanation:

Given that the trigonometric expression,

sin 5x cos x - cos 5x sin x

Here we use the "sum and difference formulas"

Sum and Difference Formulas

sin(A+B)=sin A cos B + cos A sin B

sin(A-B)=sin A cos B - cos A sin B

cos(A+B)=cos A cos B - sin A sin B

cos(A-B)=cos A cos B + sin A sin B

So,

sin 5x cos x - cos 5x sin x = sin (5x - x)

sin 5x cos x - cos 5x sin x =  sin(4x)

That's the final answer.

6 0
4 years ago
True or false 120% of a whole number is always greater than the number? and why?
Stells [14]
I can only use math to explain it. What is 100%?
100% = \frac{100}{100} 
percent means per 100.
so 120% = 120/100 = 1.2
120% of a whole number. For example 120% * 10 = \frac{120}{100} * 10 = 12
is it greater than 10. 

5 0
3 years ago
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What is the Accurate volume of this model figure
blagie [28]
I believe it is 16 cubes
7 0
3 years ago
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Cressida decided to save a part of her income in a savings account that compounds interest every four months. Her account balanc
hichkok12 [17]
The answer is "<span>the number of times the account compounds interest</span>".
The general formula is the following:
3,545(1+r)^n
wherein r is the interest rate compound each four months. 
Since there is 3*4 months in a year, then each year we compute the interest Three time, there where the factor 3 comes. 
6 0
3 years ago
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How do you go from slope-intercept form to standard form
dexar [7]
Thats How you go from slope to to standard form

6 0
3 years ago
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