Download presentation

Presentation is loading. Please wait.

1
**6.3 Double-Angle & Half-Angle Identities**

2
**The Double-Angle Identities can be easily derived from the sum identities**

• OR

3
**Double Angle Identities**

Half-Angle Identities

4
**Examples: Find the exact values**

Ex 1) Find QII so (+)

5
Ex 2) Given –5 θ –12 13

6
Ex 3) Given Is it (+) or (–)? 4 –3 5 QII so cos is (–)

7
**sec (recip of cos) is (+) in QI & QIV tan is (–) in QII & QIV**

Ex 4) Given sec (recip of cos) is (+) in QI & QIV tan is (–) in QII & QIV 1 2 QII so sin is (+)

8
**The horizontal distance a projectile can travel can be found using**

where v = initial velocity θ = launch angle g = gravitational constant = 9.8 m/s2 Ex 5) A punter consistently kicks the football at a 42° angle with an initial velocity of 25 m/s. How far from the punter is the ball when it hits the ground?

9
Homework #602 Pg #1–19 odd, 24, 26, 27, 33, 41, 45, 47, 55

Similar presentations

OK

Double Angle Formulas. Let sinA=1/5 with A in QI. Find sin(2A).

Double Angle Formulas. Let sinA=1/5 with A in QI. Find sin(2A).

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on natural disaster flood Ppt on power generation using footsteps dance Seminar ppt on cam and follower Ppt on event management system Raster scan display ppt on tv Ppt on viruses and bacteria youtube Ppt on depth first search youtube Ppt on aircraft emergencies Ppt on computer application in daily life Ppt on conceptual art drawings