Trig: Word Problems - Sine, Cosine & Tangent

!±8± Trig: Word Problems - Sine, Cosine & Tangent

www.mindbites.com This 78 minute trigonometry lesson is an opportunity to see how the skills learned in Lesson 300 Basic Trigonometry Part I are used to solving word problems using the 3 primary trig ratios, sin, cos and tan. You find unknown sides and angles in right angle triangles to solve word problems that involve: - a kite on the end of a string, diagonal of a rectangle, support wires, shadows, ladders, trees, buildings, stairways and more - angle of elevation and angle of depression - rise & run Sample problem: An airplane is flying over a forest at an altitude of 1600 ft. when the pilot sights a fire. He measures the angle of depression and finds it to be 46 degrees. How far is the fire, to the nearest tenth of a ft. from a point on land directly below the airplane? This lesson contains explanations of the concepts and 17 example questions with step by step solutions plus 3 interactive review questions with solutions. The following lesson will help you with the fundamentals of this lesson: - 300 Basic Trigonometry Part I (www.mindbites.com

Trig: Word Problems - Sine, Cosine & Tangent

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Calculated Industries 4080 Construction Master Pro Trigonometric Calculator

!±8± Calculated Industries 4080 Construction Master Pro Trigonometric Calculator

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Built-In Time Saving FunctionsComplete Stair calculations for Risers, Treads, Stringer Length and Incline AngleSet Riser Height and solve for Stairwell OpeningBuilt-in Right-Angle FunctionsRoof Function finds Area, Bundles, Squares and 4x8 Sheathing for Flat or Pitched RoofsCustom Rafter Function provides Common Rafters, Regular and Irregular Hips, Valleys and Jacks; instant Cutting Angles (Cheek, Level and Plumb)Jack Rafter results for Regular and Irregular Pitch Roof. Find Rake-Wall Studs with On-center spacingCompound Miter - Store Crown Angle and Enter Wall Corner Angle to calculate the Blade Tilt and Angle for Miter cutsAdvanced solutions for Circles, Arches, Columns, Cones, Pillars, Windows and Post-holesArched Rake-Walls with On-center SpacingStuds - Calculate the number of On-center Studs for an entered LengthEqual Sided Polygon - Calculate Corner and Bi-sect Angles, Side Length, Perimeter and AreaBoard Feet Lumber estimatingAdditional FeaturesUser Preferences: Set custom defined options such as Fractional settings for 1/2" to 1/64" and "Stair Headroom Height," Decimal Degrees and moreExponential Notation: Enter and display exponential valuesBackspace Key: Makes it easy to change just-entered valuesConstant Operator: Simplifies repetitive calculationsCost per Unit: Easily solve unit costing and pricingAccumulating Memory (M+) plus three additional Memory Storage locations"Paperless" Tape: Allows for review of last 20 entries; double-check totalsStandard Calculations: Works as a math calculator with +, -, +/-, x, ?, %, ?, 1/x, X2, and ?Automatic Shut-Off saves battery life.

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Cheap TI 83 Graphing Calculator

!±8± Cheap TI 83 Graphing Calculator

I'd been searching for a cheap TI 83 graphing calculator for a while now. Since they can be pretty expensive, I thought I'd share what I've found during my research.

What is a graphing calculator?
It's a brilliant piece of technology that can make life so much easier for math and science students. It's used mostly for higher level math - trigonometry and calculus - and allows you to work with several equations simultaneously. You can enter any equation and see it graphed - it makes the task of graphing really difficult equations quick and easy. The LCD screen allows you to track your calculations by letting you see all of the numbers you enter.

Many of these calculators, apart from solving equations and being able to store and analyze up to ten matrices together with data storage in lists of nearly 1000 elements per list also have the facility for playing games. The TI-83 Plus is one of the best calculators for this function - with thousands of games you can download online for free. You can also actually program simple games on it, and in fact it's a great introduction to computer programming if you're interested in going into that. Compared to the more expensive models, this one is much easier to use, and if you can find it at a good price, it's excellent value for money.

Finding a cheap TI-83
Although you can get more advanced models, the TI-83 has all the functionality needed for calculus, trig, statistics and more. However, if you're needing a graphing calculator for physics or chemistry you'll need a more advanced version like the TI-89 instead. Good quality graphing calculators are expensive, costing up to 0, but you can get cheap ones if you shop around. Instead of paying the regular retail price, you can find a cheap TI 83 graphing calculator online if you know where to look.

Cheap TI 83 Graphing Calculator

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