PHYS 2101 Midterm: PHYS 2101 LSU Testf2007 2101
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110: you are not permitted to use a calculator on this exam, in order to receive full credit, you must show your work. Be wary of doing computations in your head. Instead, write out your computations on the exam paper: if you need more room, use the backs of the pages and indicate to the grader that you have done so, raise your hand if you have a question. 1 (10 points) verify the following identity. (sin cos )2 = 1 sin 2 (15 points) 2 (a) (5 points) find the exact value of sin(sin 1( 2)) (b) (5 points) find the exact value of cos 1( . 2 ) (c) (5 points) complete the following equality tan(70 ) = cot( ? ) Fall-2016 (a) (5 points) find the rectangular coordinates of (r, ) = ( 4, 150 ). (b) (5 points) give another representation of (r, ) = ( 4, 150 ). (c) (10 points)
