Determine whether the given point (x,y) is on the unit circle. Nin Ο No OYes QUESTION 20 Use the basic trigonometric identities to find the exact value of the expression. 4 Given sin t = and cost > 0, find cos t. O 5 O O O cos t = cost= cos t = cos t 11 1 15 9|5 √41 5 3/5

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