SHOW ALL WORK! For roblems I - 4 each answer is worth 4 oints.
1. Evaluate the given expressions by nding the indicated roots. You may omit 1 letter
in this part. _
(a) 25 :@ (b) M
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(c) 4y4 :: (d) * _
- - - 9 pic? 2. Rationalize each of
ii 1 _
Express each in simglest form. Exact answers only: no aggroximations.
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3. 53:; _52x~3 ./ S x 3. 5
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2. (21) Use the identity COS2 x + sin2 x =1 to derive an identity invmving sec(x) and fan(x)
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(b) Write the composite trig expression as an algebraic expression in x: sec(aictan 3)
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