Question: 9. If in a triangle ABC, cos A cosB + sin A sin B Sin C = 1, then, with usual notation in AABC,

9. If in a triangle ABC, cos A cosB + sin A sin B Sin C = 1, then, with usual notation in AABC, a) the triangle is isosceles b) the triangle is right angled c) R:r=(V2+1):1 d) =1:1:(2+1)

Step by Step Solution

★★★★★

3.45 Rating (155 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

In a triangle ABC with usual notation if (a + b) (a-b) = c (b+e) then the triangle must be (A) an obtuse angled (B) right angled but not isosceles (C) isosceles right angled (D) equilateral

A right triangle ABC is given with b

If J = r sin cos ar cos 2 sin a + tan /2 In r a at T(2, /2, 3/2), determine the vector component of J that is (a) Parallel to az (b) Normal to surface = 3/2 (c) Tangential to the spherical surface r...

One of the problems encountered with organ transplants is the body's rejection of the transplanted tissue. If the antigens attached to the tissue cells of the donor and receiver match, the body will...

For this discussion, you will first review the Hakim Case Study and then watch the PBS Frontline video entitled The Released (54 minutes in length, synchronized closed-captioned, transcript via Word...

Math 1330 Precalculus Electronic Homework (EHW 3) Sections 4.1, 4.2 Work the following problems and choose the correct answer. The problems that refer to the Textbook may be found at www.casa.uh.edu...

MATH FINALS AT 8 AM NEED THIS DONE ASAP ANSWERS ONLY PLEASE HELP Name: ID: A 5. If RS - 44 and OS - 68, find OR. R a. 14 b. 44 c. 112 d. 24 6. Let C be between D and E. Use the Segment Addition...

4.1 Special Right Triangles and Trigonometric Ratios Chapter 4 Trigonometric Functions Section 4.1: Special Right Triangles and Trigonometric Ratios Special Right Triangles Trigonometric Ratios...

Name: ID: A 23. In the figure, 26 and 23 are a. alternate exterior angles C. corresponding angles b. consecutive interior angles d. alternate interior angles 24. In the figure, 26 and Z2 are...

1. Find the vector equation of a line in IR that passes through the points P(3, 6, 0) and Q(-2, 3, 1). O l(t) = (-5t, -3t, t) O l(t) = (-2 + 3t, 3 + 6t, 1) O e(t) = (-2+5t, 3 +3t, 1 -t) O e(t) =...

The income statement, also known as the profit and loss (P&L) statement, provides a snapshot of the financial performance of a company during a specified period of time. It reports a firm's gross...

Pick and product/service and trace the supply chain requirements from source to consumer. Consider the following: 1. Identify the ingredients: Find out where they are sourced. 2. Show physical...

A physician chooses to create different revenue accounts for physical examinations, office visits, and office surgical procedures. What advantage does this have over creating a combined revenue...

A FI has a $100 million portfolio of six-year Eurodollar bonds that have an 8 percent coupon. The bonds are trading at par and have a duration of five years. The FI wishes to hedge the portfolio with...

AstraZeneca is a British-Swedish multinational pharmaceutical and biotechnology company with its headquarters at the Cambridge Biomedical Campus in Cambridge, England. It wants to manufacture...

CS Publishing inc: Foreign exchange rate risk management case study Why is CS Pub changing its business model? what are pros and cons of making these changes?

Diamond Cleats Co. manufactures cleats for baseball shoes. It has outlined the following overhead cost drivers: Overhead Cost Pools Cost Driver Overhead Cost Budgeted Level for Cost Driver Quality...

Let (X. A. p) be a measure space. Show that for any A,B A, we have the equality: (AUB)+(An B) = (A) + (B).

Ten pounds of saturated water vapor at 300F are cooled at constant temperature to a saturated liquid. What is the change in pressure? The change in the total internal energy? The change in total...

Ten pounds of oxygen are compressed from 20 psia and 50F in a process governed by the equation PV n = const, where the pressure is in psfa and the volume is in ft3. The final temperature in this...

The air-fuel mixture enters an automobile engine cylinder at 120C and 100 kPa. The engine has a compression ratio of 8, which means the air-fuel mixture is compressed to one-eighth the original...

Suppose your art history professor has a small personal art collection, including some works by a famous artist. She bought this artists paintings at modest price, before he became well known. One of...

Evan has $40 to spend at an amusement park. The roller coaster costs $10 per ride. Given the information about Evans utility in Table 7P-2, explain why he chooses to ride only three times.

Say whether each of the following situations is an example of altruism or reciprocity. a. Giving a few canned goods to the local food bank for its annual food drive. b. Helping someone move her couch...