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eduard
2 years ago
13

Prove that 1/1+sinA -1/1+sinA =2tanAsinA​

Mathematics
1 answer:
enyata [817]2 years ago
3 0

Step-by-step explanation:

\frac{1}{1 +  \sin( \alpha ) }  \frac{1}{1 -  \sin( \alpha ) }  \\  \frac{1 -  \sin( \alpha ) + 1 +  \sin( \alpha )  }{(1 +  \sin( \alpha ))(1 -  \sin( \alpha ))  }  \\  =  \frac{2}{1 -  {sin}^{2} \alpha }  \\  \frac{2}{ {cos}^{2} \alpha  } = 2  \:  {sec}^{2}  \alpha

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Please help me with this??
Ludmilka [50]

Answer:

c, d and f are rational numbers

Step-by-step explanation:

c) 3\sqrt{5}*2\sqrt{5}=3*2*\sqrt{5*5} = 3*2*5 = 30\\\\\\d)  \dfrac{3\sqrt{5}}{2\sqrt{5}}= \dfrac{3}{2}\\\\\\f)  \dfrac{2\sqrt{5}}{3\sqrt{5}}= \dfrac{2}{5}

6 0
1 year ago
Is Alexis drove her car for three hours and drove 150 miles and then drove her car for 350 miles in four hours what is her avera
goblinko [34]
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4 0
3 years ago
Sketch a graph that is discrete, has a maximum, does not pass through the origin, and is an absolute value function
Stella [2.4K]
Um.. I can't sketch a graph on here.
A discrete function can't be an absolute value function because an absolute value function is continuous. But, the function equation can be as simple as
f(x) = - | x + 1 |
Just don't connect the dots when you draw it and boom, you're done.
6 0
3 years ago
Which of the following choices is the standard deviation of the sample shown here
Vladimir79 [104]
2.5 would be the answer
 
4 0
2 years ago
Read 2 more answers
PLS HELP PLEASE I NEED THIS!!!!! LOOK AT THE PICTURE PLS!!!!!
Solnce55 [7]
The answer is 9x^2+36x+36
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4 0
2 years ago
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