SOLUTION: Use the sum and differences formulas to prove the result of cos t = sin (t+pi/2). (Hint: Let θ= t and let phi = pi/2. See what sin(t+pi/2) equals.) Can you please show m

Question 980776: Use the sum and differences formulas to prove the result of cos t = sin (t+pi/2).
(Hint: Let θ= t and let phi = pi/2. See what sin(t+pi/2) equals.)
Can you please show me how to do this problem? Thank you.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

Now substitute,

and

Now simplify.
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SOLUTION: Use the sum and differences formulas to prove the result of cos t = sin (t+pi/2). (Hint: Let &#952;= t and let phi = pi/2. See what sin(t+pi/2) equals.) Can you please show m

SOLUTION: Use the sum and differences formulas to prove the result of cos t = sin (t+pi/2). (Hint: Let θ= t and let phi = pi/2. See what sin(t+pi/2) equals.) Can you please show m