Review the proof of sin(A – B) = sinAcosB – cosAsinB sin(A – B) =

Step 1: Equals cosine left-bracket (StartFraction pi Over 2 EndFraction minus A) + B right-bracket

Step 2: Equals cosine left-bracket StartFraction pi Over 2 EndFraction minus (A minus B) right-bracket

Step 3: Equals cosine (StartFraction pi Over 2 EndFraction minus A) cosine B minus sine (StartFraction pi Over 2 EndFraction minus A) sine B

Step 4: = sinAcosB – cosAsinB

How must the proof be rearranged for the steps to logically follow each other?

a. Step 3 should be step 1.
b. Step 4 should be step 1.
c. Steps 1 and 2 must be switched.
d. Steps 1 and 3 must be switched.

If jaime wants to find 60% of 320, which table should he use?

Write the contrapositive of the conditional statement. determine whether the contrapositive is true or false. if it is false, find a counterexample. a converse statement is formed by exchanging the hypothesis and conclusion of the conditional. a) a non-converse statement is not formed by exchanging the hypothesis and conclusion of the conditional. true b) a statement not formed by exchanging the hypothesis and conclusion of the conditional is a converse statement. false; an inverse statement is not formed by exchanging the hypothesis and conclusion of the conditional. c) a non-converse statement is formed by exchanging the hypothesis and conclusion of the conditional. false; an inverse statement is formed by negating both the hypothesis and conclusion of the conditional. d) a statement not formed by exchanging the hypothesis and conclusion of the conditional is not a converse statement. true

Using the figure below, select the two pairs of alternate interior angles. a: point 1 and point 4 b : point 2 and point 3 c: point 6 and point 6d: point 5 and point 7