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UkoKoshka [18]
3 years ago
6

Use your graphing calculator to determine if the equation appears to be an identity or not by graphing the left expression and r

ight expression together. If so, verify the identity. If not, find a counterexample. sec x + cos x = tan x sin x
Mathematics
1 answer:
andrezito [222]3 years ago
6 0

Answer:

(sec x)+(cos x)=(tan x)*(sin x)\\identities\\(sec x)= 1/cos x\\(tan x)=sin x/cos x\\\\and\\(cos x)^{2}+(sin x)^{2}=1\\(cos x)^{2}=1-(sin x)^{2}\\\\(1/cos x )+(cos x) = (sin x)*(sin x)/(cos x)\\ [(1/cos x)+(cos x)]*(cos x)=(sin x)^{2}\\\\1+(cos x)^{2}=(sin x)^{2}\\1+1-(sin x)^{2}=(sin x)^{2}\\2=2*(sin x)^{2}\\2/2=(sin x)^{2}\\1=(sin x)^{2}\\\\This is not true ,so\\(sec x)+(cos x)\neq (tan x)*(sin x)

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Please help and thank you
Sauron [17]

Answer: c

Step-by-step explanation:

The two points on the line are open, so they will not be included in the solution set, which means they will be greater than or less than. No number can fit both inequalities, so it must be “or”. The only one that fits this is c.

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3 years ago
Aregular polygon is drawn in a circle so that each vertex is on the circle and is connected to the center by a radius. Each of
katrin [286]

Answer:

The number of sides the polygon have 9

Step-by-step explanation:

Given in question as :

For The circle ,  the central angles measure be 40 °

Let the number of sides of polygon =  n

Now . as we know

External angle =  \frac{360^{\circ} }{n}

Or ,           40° = \frac{360^{\circ} }{n}

Or, \frac{360^{\circ} }{n} = 40°

Or, \frac{360^{\circ} }{n} = 40°

So, n = \frac{360^{\circ} }{40^{\circ}} = 9

Hence The number of sides the polygon have 9      Answer

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2/3(3/5x+9)=(2x+40)<br><br> Algebra II
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Answer:

value if x is -21.25.

...............

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