For the given problems below, determine which law to use to solve each problem, choose the appropriate formula to use, and give your answer. 1) Crankshafts on Cars. Find the measure of 20. (a) The Law of (b) Formula: 3 in. (c) Answer: 015 9 in.
For the given problems below, determine which law to use to solve each problem, choose the appropriate formula to use, and give your answer. 1) Crankshafts on Cars. Find the measure of 20. (a) The Law of (b) Formula: 3 in. (c) Answer: 015 9 in.
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter61: Areas Of Circles, Sectors, And Segments
Section: Chapter Questions
Problem 38A: Three pieces, each in the shape of a sector, are cut from the rectangular sheet of steel shown. How...
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Transcribed Image Text:For the given problems below, determine which law to use to solve each problem, choose the appropriate formula to use, and give your
answer.
1)
Crankshafts on Cars.
Find the measure of 20.
(a) The Law of
(b) Formula:
I
(c) Answer: I
3 in.
(a) The Law of
(b) Formula:
(c) Answer:
2) During a figure skating routine, Mary and Paul skate apart with an angle of 20˚ between them. Mary skates for 5
meters and Paul skates for 7 meters. How far apart are the skaters?
:: Cosine
0
x =
15°
9 in.
P
:: Sine :: cos O
((3)²+(15)²-(9)²)
(2x3x15)
(3)² + (9)² – 2 (3) (9) cos(15°)
2.5 meters
..
sin (20°)
7
sin (15)
3
sin O
9
12 meters
sin X
:: 51°
14 meters
:: 14°
(5)² + (7)² − 2 (5) (7) cos(20°)
:: 39°
2.9 meters
30
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