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3 years ago

7.4x10^-8-6.7x10^-9 please help me I don’t know the answer

Mathematics

1 answer:

postnew [5]3 years ago

6 0

Answer:

Step-by-step explanation:

7.4×10^(-8) - 6.7×10^(-9) = 6.73×10^-8 is 9.05405% smaller than 7.4×10^(-8) = 7.4×10^-8

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If (cos)x= 1/2 what is sin(x) and tan(x)? Explain your steps in complete sentences.

Natasha_Volkova [10]

The correct answers are:
1) sin(x) = $\frac{ \sqrt{3} }{2}$
2) tan(x) = $\sqrt{3}$

Explanation:
Given:
$cos(x) = \frac{1}{2}$

Step 1:
Since, according to the Trigonometric identity:
$sin^2(x) + cos^2(x) = 1$ -- (1)

Step 2:
Plug in the value of cos(x) in equation (1):
$sin^2(x) + ( \frac{1}{2} )^2 = 1 \\ sin^2(x) + \frac{1}{4} = 1 \\ sin^2(x) = \frac{3}{4}$

Step 3:
Take square-root on both sides:
$\sqrt{sin^2(x)} = \sqrt{\frac{3}{4}}$

sin(x) = $\frac{ \sqrt{3} }{2}$

Now to find the tan(x), we would use the following formula:

tan(x) = $\frac{sin(x)}{cos(x)}$ --- (2)

Plug in the values of sin(x) and cos(x) in equation (2):
tan(x) = $\frac{ \frac{ \sqrt{3} }{2} }{ \frac{1}{2} }$

Hence tan(x) = $\sqrt{3}$

6 0

3 years ago

Read 2 more answers

An observer measures the angle from the ground

BigorU [14]

Answer:

The answer is 138*

Step-by-step explanation:

The next one is 7

And the length of side X is 47m

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plz rate and don't let this get removed people need the help rn

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4 years ago

in order to fence a garden the rowan family needs 64 ft of lumber. the garden at the correas house will need to be 150% larger.h

almond37 [142]

Answer:

Step-by-step explanation:

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3 years ago

Which statement describes a cause of skewed data?

Advocard [28]

Answer:

Data skewed to the right is usually a result of a lower boundary in a data set (whereas data skewed to the left is a result of a higher boundary). So if the data set's lower bounds are extremely low relative to the rest of the data, this will cause the data to skew right. Another cause of skewness is start-up effects.

Step-by-step explanation:

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3 years ago

Sin tita + sin ^2 tita = 0

AnnyKZ [126]

Answer:

tita = 0 , 180, 270, 360. ( tita = 0 ≤ x ≤ 360).

Step-by-step explanation:

sin tita + sin ^2 tita = 0

sin tita( sin tita + 1) = 0

sin tita = 0, - 1.

For angles between 0 and 360 inclusive sin = 0 gives 0, 180 and 360 degrees. The angle whose sine is -1 is 270 degrees.

tita = 0 , 180, 270, 360.

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4 years ago