Find the exact value of the expressions (Also explain how you did it, and just tell me what mode you used on your calculator like degree or angle ty: 1.) sin (-112.5°)

2.) cos 105°

3.) tan 22.5°

4.) sin 67.5°

5.) cos (-7pi/8)

6.) tan (-75°)

7.) cos (-pi/8)

8.) sin 7pi/8

9.) cos 165°

10.) cos (-112.5°)

11.) sin (-22.5°)

12.) tan 105° ​

answer would be 8.64 or s = 11π/4 inches

step-by-step explanation:

s = r θ  

where s = arc length  

r = radius = 3 inches  

θ = central angle in radians = ( π /180)*165  

s = 3(π/180)*165  

= 8.64 inches

explanation:

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answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

hope this !

i think the answer is a.( -3, -1 )