5/4 Trig Applications

Master trig application problems: SOHCAHTOA, sines, cosines.

Today you will complete some application problems where you need to use either right triangle trig (SOHCAHTOA), law of sines, or law of cosines to solve the problem. Click HERE to see a reminder of when to use each. Will you use right triangle trig, law of sines, or law of cosines to solve for the angle measure of the chopsticks? right triangle trig law of sines law of cosines Solve the problem to find the angle measure of the chopsticks. Note the triangle that is formed by the side with length of 5. Either type your work, take a picture and upload your work, or record your voice explaining your work. A rhombus has side lengths of 25 cm and the obtuse angle measures 120o. We are interested in finding the length of the diagonal. What would you use to find the length of the diagonal? right triangle trig law of sines law of cosines Solve for the length of the diagonal. Either type your work, take a picture and upload your work, or record your voice explaining your work. Fire towers A and B are located 10 miles apart. Rangers at tower A spot a fire at 42o and rangers at tower B spot the same fire at 64o. What would you use to determine the distance from tower A to the fire? right triangle trig law of sines law of cosines Solve for the distance from tower A to the fire. Either type your work below, upload a picture, or record your voice explaining the steps you took to arrive at the solution. The Sears Tower stands 1,451 feet tall. A person is standing across the street and is looking up at the tower at an angle of elevation of 38o. What would you use to determine how far away the person is from the building? right triangle trig law of sines law of cosines The Sears Tower stands 1,451 feet tall. A person is standing across the street and is looking up at the tower at an angle of elevation of 38o. How far away from the buidling is the person? Draw a picture first. Then either type your work, upload a picture of your work, or record your voice explaining your work. Great job! You've made it to the end. Be sure to click the "Hand in Work" button TWICE! The first time you click it, it will ask you to confirm your work. Then, you must click "Confirm Hand In Work" to submit your responses! Scroll down to make sure you have confirmed your work or your teacher will be unable to see what you have done!