SOLUTION: For sin α=-3/5 with terminal side in QIII and tan β=-5/12 with terminal side in QIV,find cos(α-β)
a.63/65
b.33/65
c.-33/65
d.-63/65
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-> SOLUTION: For sin α=-3/5 with terminal side in QIII and tan β=-5/12 with terminal side in QIV,find cos(α-β)
a.63/65
b.33/65
c.-33/65
d.-63/65
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Question 1079892: For sin α=-3/5 with terminal side in QIII and tan β=-5/12 with terminal side in QIV,find cos(α-β)
a.63/65
b.33/65
c.-33/65
d.-63/65 Answer by ikleyn(52803) (Show Source):