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Use trigonometric identities to transform the first expression into the second. #133 , #134, & #137 In Exercises 129-138, use trigonometric identities to transform the

Use trigonometric identities to transform the first expression into the second.
#133 , #134, & #137
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In Exercises 129-138, use trigonometric identities to transform the first expression into the second. 129. tantcost,sint 130. sintcost,tant1 131. sint1sin2t,tantcost 132. tantsint+cost,cost1 133. cost(cost1cost),sin2t 134. sint1cos2t,sint 135. cos2t1cos2t,tan2t 136. 1sintcos2t,1+sint 137. (sintcost)2,12sintcost 138. 1sint1+1+sint1,cos2t2

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