Posted by **Jon** on Monday, February 11, 2008 at 11:49am.

1)Find the exact value of cot(-315)

A)1

B)square root of 2

C)square root of 2 over 2

D)2

I chose C

2)Find the exact value of sin(-pi/6)

A)-1/2

B)-square root of 3/2

C)-square root of 2/2

D)square root of 2/2

I chose A

3)In triangle ABC, C=30, c=22, and b=42. Find B.

A)73 degrees

B)107 degrees

C)77 degrees

D)15 degrees

I chose A

4)Find the area of triangle ABC, if A is 55 degrees, b=8 meters, and c=14 meters.

A)91.7 sq meters

B)32.1 sq meters

C)45.9 sq meters

D)56.0 sq meters

I chose C

5)Which triangle has two solutions?

A)A=130 degrees, a=19, b=11

B)A=45 degrees, a=4square root of 2, b=8

C)A=32 degrees, a=16, b=21

D)A=90 degrees, a=25, b=15

I chose C

- Trig functions and such -
**Reiny**, Monday, February 11, 2008 at 12:04pm
all ok except #1

cot (-315)

= cot 45

= 1/tan 45

= 1/1

= 1

- Trig functions and such -
**Anonymous**, Monday, July 7, 2008 at 1:11pm
In abc,c=60 degrees,a = 12,and b=5 . Find c.

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