Hi guys, sorry for the late post :) On Friday we learned about sine (sin), cosine (cos), and tangent (tan). So let's start. What are the names of the different sides of the triangle? The hypotenuse, the opposite, and the adjacent. The hypotenuse is always the side directly opposite of the right angle. If one of the acute angles is theta (idk how to put the symbol in here), than you can identify the opposite, which is across from theta. The side that is left over is the adjacent (the one beside theta). For example: Trigonometric Rations are sine theta = opposite / hypotenuse, cosine theta = adjacent / hypotenuse, and tangent theta = opposite / adjacent. The way we remember this is SOHCAHTOA. Remember that? So to find sine 35°, just press the "sin" button on your calculator and then put in 35. The number you get is your answer. It's that easy. For now. Remember, the hypotenuse (hyp), opposite (opp), and adjacent (adj) on your triangle can change, based on which angle you choose to base your labeling from. When you KNOW the angle, use sin, cos, and tan. But when you need TO FIND the angle, use sin^-1, cos^-1, and tan^-1. That's pretty much it. Lucy
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Find your green dot!AuthorsWe are members of Esquimalt High School's Gifted Math 10 class. Most of us like Hi-Chews. Archives
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