Question: Given that is an acute angle, express in terms of cos or tan : a. cos (180 ) b. cos (180 +

Given that θ is an acute angle, express in terms of cos θ or tan θ:

a. cos (180° − θ) 

b. cos (180° + θ) 

c. cos (−θ) 

d. cos (−(180° − θ))

e. cos (θ − 360°) 

f. cos (θ − 540°) 

g. tan (−θ) 

h. tan (180° − θ)

i. tan (180° + θ) 

j. tan (−180° + θ) 

k. tan (540° − θ) 

l. tan (θ − 360°)

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