Victory for the ACT Student Text 15e

V ICTORY P RACTICE T EST • 389

45. ˆ –Š‡ ”ƒ–‹‘ ‘ˆ –™‘…‘’Ž‡‡–ƒ”› ƒ‰Ž‡• ‹• :8 1 ǡ ™Šƒ– ‹• –Š‡ †‡‰”‡‡ ‡ƒ•—”‡ ‘ˆ –Š‡ •ƒŽŽ‡” ƒ‰Ž‡ǫ Ǥ ͳͲι Ǥ ʹͲι Ǥ ͵Ͳι Ǥ ͶͲι Ǥ ͺͲι 46. ‹˜‡ ƒ •“—ƒ”‡ǡ ƒ ”‡…–ƒ‰Ž‡ǡ ƒ –”ƒ’‡œ‘‹†ǡ ƒ† ƒ …‹”…Ž‡ǡ ‹ˆ ‘‡ ϐ‹‰—”‡ ‹• •‡Ž‡…–‡† ƒ– ”ƒ†‘ǡ ™Šƒ– ‹• –Š‡ ’”‘„ƒ„‹Ž‹–› –Šƒ– –Š‡ ϐ‹‰—”‡ Šƒ• ˆ‘—” ”‹‰Š– ƒ‰Ž‡•ǫ Ǥ ͳ Ǥ 4 3 Ǥ 2 1 Ǥ 4 1 Ǥ Ͳ 47. ƒ –”ƒ˜‡Ž• ͵ʹͲ ‹Ž‡• ‹ ͺ Š‘—”•Ǥ ˆ Š‡ …‘–‹—‡• ƒ– –Š‡ •ƒ‡ ”ƒ–‡ǡ Š‘™ ƒ› ‹Ž‡• ™‹ŽŽ Š‡ –”ƒ˜‡Ž ‹ –Š‡ ‡š– ʹ Š‘—”•ǫ Ǥ ͸ Ǥ ͶͲ Ǥ ͺͲ Ǥ ͳʹͲ Ǥ ʹͶͲ

DO YOUR FIGURING HERE.

?

x

cos x + =

sin

48.

x

x

cos

sin

Ǥ ͳ Ǥ sin x Ǥ Ǥ tan x Ǥ

(sin ) (cos ) x x 1

x

x

(sin ) (cos ) sin cos x x

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