AnswersSS26 Math 3 S2 M3960OXGraphing Cosecant and Secant Functions

Sum and Difference Identities Answers

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1
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How would you apply the Cosine Angle Difference Identity to find the exact value of cos 75o?

A
cos (100.5o – 25.5o)
B
cos (120o – 45o)
C
cos (180o – 75o)
D
cos (30o + 45o)
2
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What is sin 20° cos 4° + cos 20° sin 4° equal to?

A
cos 16°
B
sin 16°
C
cos 24°
D
sin 24°
3

Which expression is equal to sin 75°?

A
sin 135° cos 60° – cos 135° sin 60°
B
cos 135° cos 60° + sin 135° sin 60°
C
sin 135° cos 60° + cos 135° sin 60°
D
cos 135° cos 60° – cos 135° cos 60°

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