1. What are the amplitude, period, and translations of: y=2sin(2x-π)-3
Tuesday, October 19
What are the amplitude, period, and translations of:
y=2sin(2x-π)-3

2. Lesson 4.7
Inverse Trigonometry

3. Every trig function has an inverse.
These functions have a prefix of “arc”
Such as Arcsine, arccosine, etc

4. If sin y = x, then y = arcsin x
Inverse Sine Function
If sin y = x, then y = arcsin x

5. On a calculator the arcsine is found by using sin-1 button

6. Evaluate on a calculator:
Arcsin ½
Arctan 1
Arcsin (3/2)
Arccos .22

7. More evaluating:
Sin(arcsin 0.7)
Sin(arctan 4/3)

8. So, what is the main purpose of inverse trig?
Finding the measure of Θ (angle measures)

9. Classwork/ Homework: Pages 351-352 #9-15, 19-23, 27-45 (odd)