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schepotkina [342]
3 years ago
7

suppose sin(A)=2/5. Use the trig identity sin^2(A)+cos^2(A)=1 to find cos(A) in quadrant 1. Round to ten-thousandth.

Mathematics
1 answer:
shutvik [7]3 years ago
3 0

Answer:

about0.9165

Step-by-step explanation:

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Given a||b ,and cis not parallel to a or b which of the following are true ? Choose all answers that are correct.
umka2103 [35]

Answer:

Options B and D are true.

Step-by-step explanation:

See the diagram attached.

Line a and b are parallel and line c is not parallel to them.

There is a transverse line and this line forms the angles 1 to 12.

Now, option A gives ∠ 8 + ∠ 10 = 180° which can not be true as line c is not parallel to line b.

Option B gives ∠4 + ∠ 6 = 180° which is true because line a is parallel to line b and ∠ 4 and ∠ 6 are interior supplementary angles.

Option C gives ∠ 1 + ∠ 11 = 180° which can not be true as line c is not parallel to line a.

Option D gives ∠3 + ∠ 5 = 180° which is true because line a is parallel to line b and ∠ 3 and ∠ 5 are interior supplementary angles.

Therefore, options B and D are true. (Answer)

7 0
4 years ago
What is the solution of -3x + 7 = -2 ?
motikmotik

Answer:

X= -3

Step-by-step explanation:

Subtract 7 from both sides of the equation

Simplify

Divide both sides of the equation by the same term

Simplify

3 0
3 years ago
Let point L be between M and N on MN. Given that MN=31, ML= h-15 and LN = 2h-8. Find LN.
shtirl [24]
Given that <span>point L is between M and N on MN. Then
MN = ML + LN
31 = h - 15 + 2h - 8 = 3h - 23
3h = 31 + 23 = 54
h = 54/3 = 18

Therefore, LN = 2(18) - 8 = 36 - 8 = 28.
</span>
8 0
3 years ago
I need help on this question
vaieri [72.5K]

I'm guessing it is 10? or 7?

5 0
3 years ago
How to make a circeldiagramm
lys-0071 [83]
Make a circle and then another circle. There should be a oval in the middle. 
Like this:
 https://docs.google.com/drawings/d/10jIdkQW5rnxfDS9T2WeqkwRTvl92oJsYkXVLj8Zn6hU/edit



4 0
3 years ago
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