ELECTIVE MATH III - TRIGONOMETRY

To all 3^rd year students,

Prior to the incident, we have scheduled board work (review), graded seatwork and quiz. Below are sample questions for you to review. It is not graded but it will help somehow help you especially for those who until now still have questions regarding our lessons.

Topics included

1. Solving for the remaining parts of a right triangle

2. Applications

3. Bearing

4. Distance between two points

5. Midpoint

Exercises

1. Solve for the unknown parts of the triangle.

 

2. A fireman wants to save a girl on the second floor out of the burning building from the window. The window is about 5m above the ground. The fireman’s ladder is 7m long. Find the measure of the angle made by the ladder from the ground if the ladder hits the bottom part of the window? (Express your answer in nearest degree) **constructing an illustration of the given problem will help

3. Jaime is standing from a top of a hill when she saw Bruno is approaching him. The horizontal distance between them is 30m. Find the height of the hill if the angle of depression made by Jaime is 50°.

4. A plane leaves the port 750km due east. It then travels 250km south. What is the plane’s bearing form the port? How far is the plane from the port? (round off your answer to one decimal place)

5. Find the distance between the points (0, -1) and (7, 4)

6. What is the midpoint of line joining the points (-3, 4) and (8, 4)?

Our next lesson will be about radian measure. I have links for you for this lesson for you to study in advance.

http://www.mathwarehouse.com/trigonometry/radians/convert-degee-to-radians.php

http://www.purplemath.com/modules/radians.htm

https://www.khanacademy.org/math/trigonometry/basic-trigonometry/radians_tutorial/v/radian-and-degree-conversion-practice

You may start reading these rich resources about our next lesson; you may also download it if you want. There are also exercises which you can practice and determine how much you have learned. I will be using the same references for our discussion when the situation will be okay and when we are back to school. You can also scan your textbook about this.

Please be responsible enough and just take it easy. You have ample time to review and study these lecture. Good luck and stay safe. God Bless us all.