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2. ### How Many Children?

Harry had 4 daughters. Each daughter had a brother. How many children does Harry have?

4. ### Free Math Site or App For Geometric Shapes

What's a good, FREE phone site or tool for drawing geometric shapes?
5. ### Practice Evaluate Trig Expressions 3

Evaluate each expression given that f(x) = sin x g(x) = cos x h(x) = tan x k(x) = 2x Let d = delta A. h(k(pi/5)) B. h(1) + h(2) For A & B, use a calculator and round the final answer to one decimal place.
6. ### Practice Evaluate Trig Expressions 2

Evaluate each expression given that f(x) = sin x g(x) = cos x h(x) = tan x k(x) = 2x Let d = delta A. df/dx on [pi/4, pi/2] B. dh/dx on [pi/4, 1.58] For B, use a calculator and round the final answer to one decimal place.
7. ### Practice Evaluate Trig Expressions 1

Evaluate each expression given that f(x) = sin x g(x) = cos x h(x) = tan x k(x) = 2x A. f(5pi/6 + pi/6) B. g[k(3pi/4)]
8. ### Practice Three Angles

List three angles (in radian measure) that have a sine of -1/2.
9. ### Practice Evaluate Trigonometric Expressions

Evaluate each trig expression given below. A. cos(150) B. sin(-4pi/3)
10. ### Practice Reference Angle

Find the reference angle or reference number. NOTE: WHAT IS THE DIFFERENCE BETWEEN A REFERENCE ANGLE AND REFERENCE NUMBER? A. 60° B. -60° C. 5pi/4
11. ### Practice Trig Functions of Theta 2

Let P(x, y) denote the point where the terminal side of angle theta (in standard position) meets the unit circle. Use the given information to evaluate the six trigonometric functions of theta. A. x = -7/25 and 180° < theta < 270° B. x = -1/2 and 90° < theta < 180°
12. ### Practice Trig Functions of Theta 1

Let P(x, y) denote the point where the terminal side of angle theta (in standard position) meets the unit circle. Use the given information to evaluate the six trigonometric functions of theta. A. x = -8/15 and pi < theta < (3pi)/2 B. y = 2/9 and 0 < theta < pi/2
13. ### Practice Approximate Trig Values 3

Approximate the given trigonometric values to within successive tenths. Then use a calculator to compute the values to the nearest hundredth. A. sin 80° and sin(-80°) B. sin(2 + 2pi)
14. ### Practice Approximate Trig Values 2

Approximate the given trigonometric values to within successive tenths. Then use a calculator to compute the values to the nearest hundredth. cos(-2) and sin(-2)
15. ### Practice Approximate Trig Values 1

Approximate the given trigonometric values to within successive tenths. Then use a calculator to compute the values to the nearest hundredth. cos 2 and sin 2
16. ### Practice Larger Trig Quantity 2

Determine which quantity is larger without a calculator and then use the calculator to check your answer. (tan 4)(tan 5) or (tan 5)(tan 6)
17. ### Practice Larger Trig Quantity 1

Determine which quantity is larger without a calculator and then use the calculator to check your answer. sin 2 or sin 3
18. ### MY THOUGHTS ON COVID-19

MY THOUGHTS ON THE VIRUS 1. I would be very careful to draw the conclusion that God allowed COVID-19 to create havoc and perdition. Humans are responsible for their own actions. 2. Let us not put God into our equation. He is not x, y, or z. 3. I see a lot of people on you tube trying to...

20. ### Math Beyond Grade 10

I spend more time studying math beyond grade 10 that I often find myself forgetting arithmetic reasoning and basic algebra (algebra 1 & 2), for example. Is this normal? Can you relate?