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3 years ago

The expression sin x (cos x cot x - sin x) simplifies to?

Mathematics

2 answers:

nikdorinn [45]3 years ago

8 0

◆ Trigonometric Identities ◆

Hey !!

Check the attachment.
Hope it helps you :)

liraira [26]3 years ago

6 0

This is the correct answer. I just got it wrong on my quiz but this was the right option. cos(2x)

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Please help it’s a quiz and can you show me an example how to do this ? And the answer please?

Harman [31]

Answer:

6 i think

Step-by-step explanation:

6 0

3 years ago

PLEASE HELP/ANSWER! From 1980 to 1990, Lior’s weight increased by 25%. If his weight was k kilograms in 1990, what was it in 198

Elena-2011 [213]

The weight in 1980 is $\frac{4k}{5}$ kilograms

Solution:

From 1980 to 1990, Lior’s weight increased by 25%

His weight is "k" kilograms in 1990

To find: weight in 1980

This is a percentage increase problem

Let "x" be the weight in kilograms in 1980

The percentage increase is given by formula:

$\text{Percentage increase } = \frac{\text{Final value - initial value}}{\text{initial value}} \times 100$

Here,

Initial value in 1980 = x

Final value in 1990 = k

Percentage increase = 25 %

Substituting the values in formula,

$25 = \frac{k-x}{x} \times 100\\\\25x = 100(k-x)\\\\x = 4(k-x)\\\\x = 4k - 4x\\\\5x = 4k\\\\x = \frac{4k}{5}$

Thus the weight in kilograms in 1980 is $\frac{4k}{5}$

7 0

3 years ago

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

babunello [35]

A+b = 5
b+c= 3 1/2
2 times 2 + 3 = 7
a times d =8
c+c = 1
(e)2 = 1/9

8 0

3 years ago

Read 2 more answers

Which system of equations can be used to find the roots of the equation 4x^5-12x^4+6x=5x^3-2x?

Sveta_85 [38]

$^{(1)}\ \ 4x^5-12x^4+6x=5x^3-2x\ \ ^{(2)}\\\\ \left\{\begin{array}{ccc}y=4x^5-12x^4+6x\ \ \ ^{(1)}\\y=5x^3-2x\ \ \ ^{(2)}\end{array}\right$

Answer: system nr 4.

7 0

3 years ago

(3 5/7+ 1 1/5)+ 2 1/7

Karo-lina-s [1.5K]

Answer:7 2/35

Step-by-step explanation:

This is because of pemdas parenthesis exponents multiplication division addition and subtraction

3 0

3 years ago