- #1

- 216

- 0

for part b i'm not sure how to do it

any hints on how to do it? Ive tried using sine rule etc but i'm just guessing, and i'm pretty sure there is a more simple method.

- Thread starter synkk
- Start date

- #1

- 216

- 0

for part b i'm not sure how to do it

any hints on how to do it? Ive tried using sine rule etc but i'm just guessing, and i'm pretty sure there is a more simple method.

- #2

- 46

- 0

Hint: What is the relation between the angles DAB and DAC?

- #3

- 216

- 0

Right well I got this, i'm not sure if its right. DAB and DAC are equal so lets call DAB "a", 2pi = 2.2 + 2a so 2pi - 2.2 / 2 = a which is pi - 1.1 = 2.04?Hint: What is the relation between the angles DAB and DAC?

- #4

- 46

- 0

That's right, and I believe your math is correct too.

Since all three sides of the triangles are congruent:

[itex]\overline{DB}\cong\overline{DC}[/itex] given

[itex]\overline{BA}\cong\overline{AC}[/itex] because they are the same length

[itex]\overline{AD}\cong\overline{AD}[/itex] trivial, they share a common line

Then the corresponding angles in the triangles must also be congruent.

- Last Post

- Replies
- 7

- Views
- 2K

- Last Post

- Replies
- 4

- Views
- 10K

- Last Post

- Replies
- 5

- Views
- 1K

- Last Post

- Replies
- 9

- Views
- 3K

- Last Post

- Replies
- 2

- Views
- 2K

- Last Post

- Replies
- 3

- Views
- 5K

- Last Post

- Replies
- 3

- Views
- 4K

- Last Post

- Replies
- 2

- Views
- 2K

- Last Post

- Replies
- 8

- Views
- 2K

- Last Post

- Replies
- 16

- Views
- 2K