Greg Needs Help With Trig
Updated: 2/19/2020
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#### Storyboard Description

Comic strip for geometry, must have the problems using sine cosine or tangent. One must be finding an angle. Answers must be correct.

#### Storyboard Text

• Hey Greg, you seem aggravated, are you okay??
• I want to figure outthe angle of elevationbetween the tree andthe edge of both ofthe chairs. But I donot know how!!!
• No not at all, thatChristmas tree isannoying mebecause it is notcentered on the table
• It is ok, I know how,all you need to do isform a triangle with the points youare measuring and then use sine, cosine,or tangent to find the angle of elevation
• By finding the length of each side of the triangle, it is very easy to find the angle ofelevation
• For this problem you would use theinverse cosinecos-(3/5)
• The angle ofelevation would be 50.1 degrees.
• 4
• 90
• 3
• ?
• 5
• For this one youwant to find what?
• I want to find thehypotenuse
• That could easilybe found using thePythagoreantheorem but forpractice we willuse triganometry
• ?
• 4
• Luckily this triangle is a45/45/90 so finding theangle measures is noproblem
• 90
• 45
• 4
• The hypotenuse will be 5.7 feet.
• Sin(45) = 4/x
• We will try to findthe angle of elevation forthis right triangle
• Tan-(x)=8/4
• 4 4
• 8
• The angle ofelevation will be 63.4 degrees.
• 8.9