## Homework Hints 18-1

Problems 1-4
There are many problems throughout the text labeled IN YOUR OWN WORDS. Just relax; do not be afraid to give your opinion. For the most part, these questions do not have “right” or “wrong” answers. You should spend … See the whole entry

## 18.1 Outline

1. What is Calculus?
1. Calculus is the mathematics of motion and change.
2. The three main ideas of calculus are limit, derivative, and integral
1. Achilles and the tortoise
2. limit of a sequence
3. The derivative: the tangent
See the whole entry

## Homework Hints 7-5

Problems 1-4
These problems are designed to make sure you are familiar with the Pythagorean theorem as well as the definitions of sine, cosine, and tangent.

Problem 5
Use the Pythagorean theorem and Example 1.

Problems 6-16
Use the definition … See the whole entry

## 7.5 Outline

1. Pythagorean theorem
2. Trigonometric ratios
1. sine
2. cosine
3. tangent
3. Inverse trigonometric ratios
1. calculator calculating
2. inverse trigonometric ratios
1. inverse tangent
2. inverse cosine
3. inverse sine
4. Applications
1. angle of elevation
2. angle of depression