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Decide whether the equation is or is not an identity.sin (α + β) + sin (α – β) = 2 sin α cos β

This course uses Flickr to create photo albums for the photo exercises.

This course has required on-campus activities.

I can use my smart phone to complete the photography assignments.

Commas Kia called from upstairs, “Could you turn the TV down?”

Commas The sun began to rise, and warm all of us who were sitting in the duck blind. 

Shifts in Verb Tense After I turned off the ignition, the engine continued to sputter for several minutes.

Commas Because they lived in mountainous terrain the Inca never, developed the wheel.

Capital Letters Yasmin speaks Italian and Spanish equally well.

Commas Madeline’s first car a 1995 Volvo was nicknamed The Blue Stallion.