Trigonometric Identities Worksheet With Answers Page 20
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25SOLUTION:
13-1 Trigonometric Identities
Ebony; Jordan did not use the identity that
and made an error adding rational expressions.
51. Refer to the figure below. If
what is the length of
?
A 5
B 4
C 3.2
D
SOLUTION:
Option A is the correct answer.
52. PROBABILITY There are 16 green marbles, 2 red marbles, and 6 yellow marbles in a jar. How many yellow
marbles need to be added to the jar in order to double the probability of selecting a yellow marble?
F 4
G 6
H 8
J 12
SOLUTION:
The probability of getting a yellow marble is
.
To double the probability of selecting a yellow marble, we need to add x marbles.
That is:
Option J is the correct answer.
53. SAT/ACT Ella is 6 years younger than Amanda. Zoe is twice as old as Amanda. The total of their ages is 54.
Which equation can be used to find Amanda’s age?
A
B
C
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D
E
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