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Determine the number of triangles with the given parts and solve the triangle

0 votes

If someone could help me out with these three it would be so helpful, I can't figure them out, thank you in advance!

asked Nov 14, 2016 in TRIGONOMETRY by anonymous

3 Answers

0 votes

(1)

Step 1:

The sides and angle of the triangle image

Law of sines image

Find image.

Substitute image in the law of sines.

image

Find image.

Substitute image in image

image

Find image.

Substitute image in law of sines.

image

Solution:

The number of triangles with parts are image

answered Nov 15, 2016 by Anney Mentor
reshown Nov 15, 2016 by goushi
0 votes

(3)

Step 1:

The sides and angle of the triangle image

Law of  cosine rule :

image

Substitute image in the cosine rule.

Find .

image

Law of sines

Find .

Substitute image in the law of sines.

image

Find image.

Substitute image in

image

Solution:

The number of triangles remaining parts are image

answered Nov 15, 2016 by Anney Mentor
0 votes

(2)

Step 1:

The vector is image

Find the magnitude.

Magnitude of the vector image

Substitute image in the formula of magnitude.

image

Magnitude of the vector image

Find the Direction.

Direction of the vector image

Substitute image in the direction formula.

image

Direction of the vector image

Solution:

Magnitude of the vector image

Direction of the vector image

answered Nov 15, 2016 by Anney Mentor

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