Explain the Law of Cosines mathematically.  Why does it work?  Is there a proof?

Q: Problems 7. Create a process (series of steps) that could be used to solve for the area of a…

A:

Q: cosA cosB cosc 7) Use the Law of Cosines to prove the following identity z° +z9 +zD a b 2abc

A:

Q: How do you find the degree of a triangle? What is the degree of ∆ABC and ∆CAB if A=90° B=40° and…

A: Given query is to find the bangle of triangle.

Q: Based on its Greek origins, the word “trigonometry” can be translatedas __________ _________.

A: Trigonometry is the branch of mathematics that studies the relationship between the length of sides…

Q: еху (ay cosica) since) -y + ay²e²) dx = ) dx = (x - 5.n²cx) - 4xye Ja

A: Exact differential equation Mdx+Ndy=0 [ where My=Nx ] has the solution. ∫M (taking y as a…

Q: (a) (sec² 2r – 1)° dz

A: Note: The given question is not in the type of subparts. As per our company guidelines, we are…

Q: 3 -dr ¤(x – 2) Integrate:

A:

Q: lel A= 3i-) B=2itガ-3と Find Vedor C ctA

A:

Q: Solve Jě cose dc

A: To find the following integration  I = ∫ ex.cosx.dx

Q: 8. V. 17.

A: The figure is given by

Q: Find angle B for the roof truss shown in the figure below. Hint: Use Cosine law. 0 11 A 6 ft

A: The roof torus is given in the figure. To find the angle B using the law of cosines.

Q: Approximating the Area of a Lake To approximate thearea of a lake, Cindy walks around the perimeter…

A: The sides and the angles of a triangle are related by the cosine law expression. The expression for…

Q: If w =-i, determine all the roots of Vw. 2

A:

Q: Solve the triangle

A:

Q: Which measurement of acute triangle ABC can you find by direct substitution of the labeled measures…

A: Given data set: We have a triangle with given properties: Side c = 8 Side a = 3 Angle beta = 57.53…

Q: 2.((6e0.924i)(4+7i)³ )6

A:

Q: sin't 3 x cos x dx 500 х 415

A: ∫sin6xcos3xdx=∫1-sin2xcosxsin6xdxLet u=sinx.=∫ u61-u2du=∫ u6-u8du=∫ u6du-∫…

Q: Find the p-value. Give to four decimal places. p-value - State your decision. Since the p-value is…

A: The z-test statistic (single proportion) is,    Z=p^-p0p0(1-p0)nwherep^=sample proportionp0=claimed…

Q: 15. Solve the triangle below. Round all answers to the nearest tenth. 13.4 2ばーーは 3.13.69-12 53 12 yd…

A: The diagram of the triangle is shown above in the question. The measure of side RS is 17 yd. The…