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e-lub [12.9K]
3 years ago
11

Rewrite with only sin x and cos x.

Mathematics
1 answer:
aivan3 [116]3 years ago
5 0

Answer:

cos x (2 sin x − 1)

Step-by-step explanation:

sin(2x) − cos x

Use double angle formula.

2 sin x cos x − cos x

Factor.

cos x (2 sin x − 1)

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Factor the polynomial.<br> 13x² – 20x – 12
erma4kov [3.2K]

Answer:

(13 x + 6) (x - 2)

Step-by-step explanation:

Factor the following:

13 x^2 - 20 x - 12

Factor the quadratic 13 x^2 - 20 x - 12. The coefficient of x^2 is 13 and the constant term is -12. The product of 13 and -12 is -156. The factors of -156 which sum to -20 are 6 and -26. So 13 x^2 - 20 x - 12 = 13 x^2 - 26 x + 6 x - 12 = x (13 x + 6) - 2 (13 x + 6):

x (13 x + 6) - 2 (13 x + 6)

Factor 13 x + 6 from x (13 x + 6) - 2 (13 x + 6):

Answer: (13 x + 6) (x - 2)

6 0
3 years ago
How to solve y for this problem:
True [87]
16x+9=9y-2x\ \ |Add\ 2x\ to\ both\ sides\\\\&#10;16x+9+2x=9y-2x+2x\\\\&#10;18x+9=9y\ \ \ |Divide\ by\ 9\\\\&#10;\frac{18x}{9}+\frac{9}{9}=\frac{9y}{9}\\\\&#10;2x+1=y\\\\&#10;Solution\ is\ y=2x+1.
6 0
3 years ago
Tan^2 x+sec^2 x=1 for all values of x.<br> True or False
gogolik [260]
False 

because tan^2 45 =  1^2 = 1
and sec^2 x =  1/ cos^2 45  =  (sqrt2)^2 = 2

so the sum = 3
3 0
3 years ago
Read 2 more answers
6 greater than x is greater than 84
Vsevolod [243]
Answer: x+6>84

6 greater than x ---> x+6
greater than 84-------> >84


Hopefully this helped!
5 0
3 years ago
Read 2 more answers
Explain why it does not matter what letter or symbol is used to find an unknown number
ivann1987 [24]
A b c d... and x are all representing 1 unknown #. The particular letter
is not revelent unless its like f (x) =.... which just means y but g(x) sometimes means graph.
otherwise it doesn't matter at all
7 0
3 years ago
Read 2 more answers
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