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# Trigo

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• Slide: 1
• ﻿Liais going for a walk while on the trail she's going to bird watch while using trigonometry.
• Slide: 2
• ﻿x
• ﻿﻿30°
• 43 ft﻿
• ﻿﻿Lia saw a bird on a tree. She wants to know how high the bird is. Lia is 43 ft away from the base of the tree at a 30° angle. She wants to know how high up the bird is. So she does Tan(30)⋅43=24.82. So the bird is 24.82 ft high.
• Slide: 3
• 29ft﻿
• ﻿x
• 37ft﻿
• ﻿﻿Lia finds another bird on a tree. She wants to know the angle of evolution. The bird is 29 ft off the ground and she is 37 ft away from the bird. To find the angle of evolution she does Tan-﻿1(29/37)= 38°. So the angle of evolution is 38°.
• Slide: 4
• 15ft﻿
• ﻿﻿57°
• ﻿x
• ﻿﻿﻿While Lia is walking she saw a broken branch leaning on a tree with a bird on top. The branch is 15 ft long and she is at a 52°angle. She wants to knowhow far she is from the tree so she does Cos(52)⋅15=9.23. So she is 9.23 ft away from the tree
• Slide: 5
• 20ft﻿
• ﻿x
• ﻿﻿20°
• ﻿﻿Lia finds another bird. She is looking at it diagonally from 20 ft away at a 20° angle. She wants to know how high the bird is in the tree so she does Sin(20)⋅20=6.84. So the bird is 6.84 ft high.
• Slide: 6
• ﻿After a long day of bird watching Lia is ready to go home﻿.
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