I’m pretty sure it’s the 4th one
Answer:
phthagoras
Step-by-step explanation:
<h3>Answer;</h3>
C. The alternative form of the law of cosines
When given all three side lengths of a triangle but none of the angle measures, you can solve for all angle measures using<u> the alternative form of the law of cosines</u>.
<h3>Explanation;</h3>
- From the law of cosines, given that a, b and c are the edges of a triangle and A, B and C are the corresponding interior angles of the the triangle.
<h3>Then; a² = b² + c² − 2 bc cos A, or</h3><h3> b² = a² + c² − 2 bc cos B, or</h3><h3> c² = a² +b ² − 2 bc cos C</h3>
Therefore; when given all the sides or edges of the triangle;
- we can use the law of cosines to find one angle, then
- we use the law of cosines again to find the second angle, and finally,
- we use the point that angles in a triangle add up to 180 to get the third angle;
<h3 />
4.6 miles a minute
You just divide the too
Answer: 22 meters
<u>Step-by-step explanation:</u>
Draw a picture of a right triangle and label the height as 30 meters and the hypotenuse as 37 meters. Use the Pythagorean Theorem to find the base (the length of the shadow).
a² + b² = c²
x² + 30² = 37²
x² = 37² - 30²
x² = 1369 - 900
x² = 469
√x² = √469
x = 21.656
x ≈ 22
