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Angles of Depression/Elevation Law of Sines & Area of a A December 10 th, 2013 B December 11 th, 2013
Angles of Elevation/Depression
Area of a Triangle w/ Height
How to Label the Sides/Angles
The Area of a Triangle Formula
Law of Sines / The Sine Rule
So when do I use law of sines and when do I use trig ratios? Use basic trig ratios and equations for RIGHT TRIANGLES ONLY! Law of Sines can be used when not a right triangle and given:
Law of Sines / The Sine Rule
Homework A Day Edition 2 Pg. 404 #1-3, 5-6, 9 Pg. 413 #1 and #4 Pg. 417 #1 Pg. 418 #1-2 B Day Edition 1 Pg.329-330 #1-3, 5-6, 12 Pg. 338-339 #1 and #4 Pg. 341 #1 Pg. 343 #1-2
TODAY IN ALGEBRA 2.0… Learning Target : You will solve triangles that have NO RIGHT ANGLE using LAW OF COSINES. Independent Practice.
Law of Cosines Herons Formula Determining b/w Sine & Cosine December 12 th, 2013 December 13 th, 2013.
Sine Law Homework Questions??? Pg. 25 # 3, 5, 7, 9.
Given Find the length of to the nearest tenth. 1. Draw a diagram and label it. A C B 2. Draw a perpendicular from AB to C. 3. Write trig equations using.
Geometry Notes Lesson 5.3B Trigonometry
Geometry Notes Lesson 5.3A – Trigonometry T.2.G.6 Use trigonometric ratios (sine, cosine, tangent) to determine lengths of sides and measures of angles.
Class Work 1.Sketch a right triangle that has acute angle , and find the five other trig ratios of . 2.Evaluate the expression without using a calculator.
Today – Monday, March 11, 2013 Review for QUIZ QUIZ
Tonight’s Homework Memorize all Trig stuff!! Pg. 367#9 – 24 all.
Warm Up A man looks out from a water tower and waves to his daughter who stands on the ground, 60 feet from the base of the water tower. The angle of depression.
Homework Questions. LOGS Warm-up Evaluating Logs.
Today – Monday, March 11, 2013 Warm Up: Solving missing sides of right triangles or angles of right triangles Review Solutions to Angles of Elevation.
1.Name the different types of triangles 2.What is the angle sum of a triangle rule? 3.What is Pythagorean Theorem and when can we use it? 4.What do you.
PreCalculus 6-1 Law of Sines. This lesson (and the next) is all about solving triangles that are NOT right triangles, these are called oblique triangles.
CHAPTER 5 LESSON 4 The Law of Sines VOCABULARY None.
Section Law of Sines and Area SAS Area 1-90 Since SAS determines a triangle, it should be possible to find its area given the 2 sides and the angle.
Today – Friday, March 15, 2013 Warm Up: Solving missing sides of right triangles or angles of right triangles Review Solutions to Angles of Elevation.
LAW OF SINE AND COSINE UNIT 5 – 6 USE ON ALL TRIANGLES!!!!
Starter a 6 c A 49° 96° 1.Use the Law of Sines to calculate side c of the triangle. 2.Now find the Area of a Triangle.
Lesson 6.1 Law of Sines. Draw any altitude from a vertex and label it k. Set up equivalent trig equations not involving k, using the fact that k is equal.
Homework Questions. Section 4.2 Mrs. Ramsey.
D. Trigonometry Math 10: Foundations and Pre-Calculus FP10.4 Develop and apply the primary trigonometric ratios (sine, cosine, tangent) to solve problems.
Law of Sines Use it when you are given Angle-Angle-Side (AAS) Angle-Side-Angle (ASA) Side-Side-Angle (SSA)
Right Triangles & Trigonometry OBJECTIVES: Using Geometric mean Pythagorean Theorem 45°- 45°- 90° and 30°-60°-90° rt. Δ’s trig in solving Δ’s.
Law of Cosines. We use the law of cosines and the law of sines because we need to be able to find missing sides and angles of triangles when they are.
6.1 Laws of Sines. The Laws of Sine can be used with Oblique triangle Oblique triangle is a triangle that contains no right angle.
Trigonometry Section 6.1 Law of Sines. For a triangle, we will label the angles with capital letters A, B, C, and the sides with lowercase a, b, c where.
Unit 4: Trigonometry Minds On. Unit 4: Trigonometry Learning Goal: I can solve word problems using Sine Law while considering the possibility of the Ambiguous.
Sine, Cosine, Tangent. 8.7 Sine, Cosine, And Tangent Essential Question: How do you find the side lengths of a triangle that is not special?
4.3 Right Triangle Trigonometry Trigonometric Identities.
Unit 4: Trigonometry Minds On
6.2 Trig of Right Triangles Part 1. Hypotenuse Opposite Adjacent.
Pg. 435 Homework Pg. 443#1 – 10 all, 13 – 18 all #3ɣ = 110°, a = 12.86, c = 18.79#4No triangle possible #5α = 90°, ɣ = 60°, c = #6b = 4.61, c = 4.84,
Warm-Up Make all units the same then solve for the missing side 32 in.
13.5 Law of Cosines Objectives: 1.Solve problems by using the Law of Cosines 2.Determine whether a triangle can be solved by first using the Law of Sines.
Class Work Let’s start with some review!! 1.Solve for x. x 7 42
4.4 Pythagorean Theorem and the Distance Formula Textbook pg 192.
Objective - To use basic trigonometry to solve right triangles.
Trig. Functions & the Unit Circle. Trigonometry & the Unit Circle VERY important Trig. Identity.
[8-3] Trigonometry Mr. Joshua Doudt Geometry pg
Today – Wednesday, March 6, 2013 Warm Up: Solving missing sides of right triangles or angles of right triangles Pass back Quizzes/ Test Corrections.
Oblique Triangles Part I Learning Goal: I can solve for a missing side or angle in a non-right triangle using sine law.
Math /7.2 – The Law of Sines 1. Q: We know how to solve right triangles using trig, but how can we use trig to solve any triangle? A: The Law of.
Trigonometry. Basic Ratios Find the missing Law of Sines Law of Cosines Special right triangles
6.2 Solving Trigonometric Equations with Identities.
Geometry Notes Lesson 5.3C Trigonometry T.2.G.6 Use trigonometric ratios (sine, cosine, tangent) to determine lengths of sides and measures of angles in.
6.4 Law Of Sines. The law of sines is used to solve oblique triangles; triangles with no right angles. We will use capital letters to denote angles of.
Chapter 5 Lesson 1 Trigonometric Ratios in Right Triangles.
Geometry Warm-Up Solve for the missing side (Solve for x): Set up ratio, last step, plug into calculator 52° 32 x 33° 8x 13° x11.
Merrill pg. 765, feet meters feet meters meters ° 16. 1° °
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