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Tomtit [17]
3 years ago
7

Given the identity tanX=sinXcosX and the relationship between the sine and cosine of complementary angles, what is tan (90°− A)?

Mathematics
2 answers:
lana [24]3 years ago
8 0

Answer:

Step-by-step explanation:

Mumz [18]3 years ago
4 0
Note  tanx =    sinx / cosx.    What you typed is wrong.

For complementary Angles, that is Angles that add up to 90 degrees.
For example 60 and 30 are complementary. 20 and 70 are also complementary, same is 40 and 50. That is because they both add up to 90.

For Complementary Angles:

sinx  = cos(90 - x)
cosx  = sin(90 -x)
tanx    = cot(90 -x)
cotx    =  tan(90 -x).                              cotx =  1/tanx

Therefore tan(90-A) = cotA.
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Step-by-step explanation:

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2 years ago
Find the slope pf the line on the grap (-2,2),(4,0) reduce all fractional answers to the lowest term.
wariber [46]
Hey there! :) 

We're trying to find the slope of the line on the graph (not given, but that's okay). We're given the points (-2, 2) and (4, 0). 

Using the slope equation, we simply just have to plug our points in and boom - there's your slope! 

Slope equation : m = y₂ - y₁ / x₂ - x₁

Now, using our given points, we can very simply plug everything in! :)

Now, in case you didn't know which number aligns with which variable, I'll go ahead and help you out with this. 

x₁ = -2 , x₂ = 4 , y₁ = 2 , y₂ = 0

Now, let's plug and chug!

m = (0 - 2) / (4 - (-2))

Simplify.

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Simplify.

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So, our slope is -1/3.

~Hope I helped!~
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3 years ago
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