Express the following in terms of trigonometric ratios of acute angles: a. sin 240 b. sin (80)

Question:

Express the following in terms of trigonometric ratios of acute angles:

a. sin 240° 

b. sin (−80°) 

c. sin (−200°) 

d. sin 300° 

e. sin 460°

f. cos 110° 

g. cos 260° 

h. cos (−50°) 

i. cos (−200°) 

j. cos 545°

k. tan 100° 

l. tan 325° 

m. tan (−30°) 

n. tan (−175°) 

o. tan 600°

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