As many as you could help with would be appreciated! :) Student Name: Class: 12/

Question

As many as you could help with would be appreciated! :)

Student Name: Class: 12/14/05 Change the measure to degrees, minutes, and seconds. 1. 155.29' [A] 155o 16 36 [B] 155° 17'24" [C] 155° 17'29 [D] 155° 29' 43 2. 93.60 [A] 93° 35' 60" [B] 93° 60 3 [C] 93° 36' 0 [D] 93° 32' 38 Write the measure as a decimal to the nearest thousandth 3. 355° 57' 5" [A] 355.571° [B] 355.951 [C] 355.099 [D] 356.033° 4.-302° 56' 10 [A]-302.936 [B]-302.561° C1-302.182° [D]-303.1 Advanced Mathematical Concepts Chapter 5: The Trigonometric Functions Form 1 Page 3

Explanation / Answer

1. 155.29 deg

1 deg = 60 minutes

0.29 deg = 17.4 minutes

1 minute = 60 sec

so, 0.4 minute = 24sec

So, 155.29 deg = 155deg 17minutes 24 seconds

8) From triangle AC = sqrt( AB^2 - BC^2) = sqrt( 15^2 -12^2) = sqrt81 =9

cosA = 12/15 = 3/5

sinA = 9/15 = 3/5

tanA =9/12 = 3/4

9) csc(theta) = sqrt(65)/4

sin(theta) = 4/sqrt(65)

Base = sqrt( 65 - 16) = 7

So, cos(theta) = 7/sqrt(65)

sec(theta) = sqrt(65)/7

Option D

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