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Lerok [7]
3 years ago
10

Not sure if I solved this right. anyone know?

Mathematics
2 answers:
Anestetic [448]3 years ago
7 0
2tan^2x - secx = 1
Plug in the values for secx and tanx.


First choice: secx = -1
means tan^2 x = 0
2(0) - (-1) = 1

Second choice: secx = 3 = hyp/adj
means  tanx = √8
(Pythagorean theorem)
2(8) - 3 ≠ 1

Third choice: tanx = 3 = opp/adj
hyp = √(10)
means secx = √(10)
2(9) - √(10) ≠ 1

fourth choice:
tanx = -1 = opp/adj
means secx = √(2)
2(1) - √(2)  ≠ 1

fifth choice: secx = 3/2
means cosx = 2/3 ; tanx = √(5)/2
2(5/4) - 3/2 = 1

Looks like the 1st and 5th choice work.
nadya68 [22]3 years ago
6 0
Im so sorry the picture isnt loading for me -,-
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3 years ago
What is the value for l, after the equation 3l + 3w = 18 is rearranged?
Zigmanuir [339]
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7 0
4 years ago
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camille invested $3000 into an account that earned annual simple interest. she made no deposits or withdrawals, and after 9 yrs,
KonstantinChe [14]

Answer:

6.5 %  

Step-by-step explanation:

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I = Prt

Data:

I = $1755

P = $3000

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Divide each side by 27 000

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The annual percentage rate was 6.5 %.

8 0
4 years ago
Should the line of best-fit travel through the origin of the graph . Explain your reasoning
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7 0
3 years ago
A and B are vertical angles. If m A = (4x + 8)° and m B = (2x + 28)°,<br> then find the value of x.
baherus [9]

Answer:

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Vertical angel are always Equal ( = )

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3 years ago
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