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telo118 [61]
3 years ago
13

If sin 0 = - and 270º < 0< 360°, what is cos 0?

Mathematics
1 answer:
Alik [6]3 years ago
7 0

Answer:

  cos(θ) > 0

Step-by-step explanation:

In Quadrant IV, the cosine is positive.

__

In the attached, trig functions not listed are negative.

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Select the equivalent expression.
Free_Kalibri [48]

Answer:

\frac{7^{15}}{3^{30}}

Step-by-step explanation:

The given expression is:

(\frac{3^{-6}}{7^{-3}})^{5}

Moving the expression to the other side in the fraction changes its sign to opposite. A numerator with negative exponent, when written in denominator will have the positive exponent. Using this rule, we can write:

(\frac{3^{-6}}{7^{-3}})^{5}\\\\ = (\frac{7^{3}}{3^{6}} )^{5}

The exponent 5 can be distributed to both numerator and denominator as shown:

(\frac{7^{3}}{3^{6}} )^{5}\\\\ = \frac{(7^{3})^{5}}{(3^{6})^{5}}

The power of a power can be written as a product. i.e.

\frac{(7^{3})^{5}}{(3^{6})^{5}}\\\\ =\frac{7^{15}}{3^{30}}

So, the expression similar to the given expression and with positive exponents is: \frac{7^{15}}{3^{30}}

6 0
3 years ago
Read 2 more answers
Find the possible value or values of r in the quadratic equation r2 – 7r – 8 = 0. 
dsp73
R^2-7r-8=0 

<span>=> ( r - 8) ( r + 1 ) = 0 </span>

<span>=> r - 8 = 0 or r + 1 = 0 </span>

<span>=> r = 8 , r = -1
the answer is A</span>
5 0
3 years ago
Read 2 more answers
What is the slope of a line that travels through (-5,-5) and (-2,-3)?
iren [92.7K]

Answer:

m (slope) = 2/3

Step-by-step explanation:

m= change in y / change in x

m= y2-y1 / x2-x1

m= -3-(-5) / -2-(-5)

m= 2/3

3 0
3 years ago
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Angle A and angle B are supplementary angles. if Angle A is 35 degrees, how big is angle B (Btw Angle B is just a straight line.
zepelin [54]

Answer:

145

Step-by-step explanation:

<u>So lets recall what a supplementary angle is. A suppelemenatry angle is  two angles that make up 180 degrees.(half circle)</u>

This is different from a complenenary angle with is two angles that make up 90 degrees(quarter circle)

Ok, so we can write the equation for the supplementary angle as:

35+b=180

Lets subtract the angle we knwo from both sides:

<u>b=145</u>

Now we know that B(second angle) must be equal to 145 degrees.

Hope this helps!

6 0
3 years ago
SIMPLE MATH PROBLEM! PLEASE HELP!<br><br> The equation needs to use c, t, and =.<br><br> Thanks!
Liula [17]
The cost c, is 55 per ticket t, so the equation is c=55t
6 0
3 years ago
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