Victory for the ACT Student Text 15e

M ATH Q UIZZES • 265

EXPLANATIONS

ˆ –Š‡…ƒ–‡‰‘”‹‡• ‹ –Š‡ –ƒ„Ž‡ ƒ”‡ ”ƒ ‘”†‡”‡† ˆ”‘ ‘‡ –‘ ‡Ž‡˜‡ ‹ ‡ƒ…Š ›‡ƒ”ǡ Š‘™ ƒ›…ƒ–‡‰‘”‹‡• ™‘—Ž† Šƒ˜‡ ƒ †‹ˆˆ‡”‡– ”ƒ ˆ”‘ ʹͲͲ͸ –‘ ʹͲͲ͹ǫ Ǥ –™‘ B. three C. four Ǥ ϐ‹˜‡ E. six

17.

18. (J) 0DWKHPDWLFV *HRPHWU\ 'HÀQLWLRQV RI the Six Trigonometric Functions ‹…‡ –Š‡ ϐ‹‰—”‡ ‹• ƒ ”‹‰Š– –”‹ƒ‰Ž‡ ™‹–Š •‹†‡• –Šƒ– ƒ”‡ ͷ ƒ† ͳʹ —‹–• Ž‘‰ǡ –Š‡ Š›’‘–‡—•‡ —•– „‡ ͳ͵ —‹–• Ž‘‰Ǥ Š‡ ˜ƒŽ—‡• ‘ˆ –Š‡ •‹š –”‹‰‘‘‡–”‹…ˆ—…–‹‘• for A + are: sin A 5 A 12 13 Ǥ ŽŽ ‘ˆ the answer choices are true except (J): cot A ! . 5 13 AB BC AC BC 13 ; cos ; cot ; sec AB AC BC AC 13 ; tan A 12 5 A 5 12 ; csc A BC AB 5 13 A AC AB 12

‘” –Š‡ ϐ‹‰—”‡ „‡Ž‘™ǡ ™Š‹…Š ‘ˆ –Š‡ ˆ‘ŽŽ‘™‹‰ •–ƒ–‡‡–• ‹• ǫ

18.

Throwback to

Math Class

1

hyp

= =

sec

cos

adj

F. sin G. cos H. tan J. cot K. sec

1

hyp

csc

sin

opp

5

A

1

adj

13

cot

tan

opp

12

A

13

5

A

12

13

A

5

13

A

12