Name: Lesson 12.5 Problem Solving with Trigonometry
Brand: EduBirdie
Rating: 5.0 (37 reviews)

University:
College Entrance Preparation
Course:
ACT Preparation (Mathematics)
Academic year:

2020
Views:

464

Pages:

3
Author:

Turfmorrybk8

Lesson 12.5 * Problem Solving with Trigonometry a Name ' Date i i ! 1 . While floating down a river with a 2.75 mi/hr current, Alicia decides to swim toward the river bank. She can swim 0.75 mi/ hr in still water. What is the actual speed at which she moves toward the bank? At what angle will she approach the bank, measured with respect to the bank? a - Period ! 2. : : ' .i ; ‘i I II Find the measure of each angle to two decimal places. i 4( 15, 9) C ! B( 4, 7 ) I I 1 i b a C( 10, 0 ) 3. Two fire watchtowers 8.4 km apart spot a fire at the same time. Tower 1 reports the fire at a 36° angle measure from its line of site to Tower 2. Tower 2 reports a 68° angle measure between the fire and Tower 1. < : :• .i i* How far is the fire from each tower? •* I : '1 4. a. Express the cosine of angle A in terms of the sine of angle A. ,I b. Use your answer to part a to find cos A without first finding the measure of /LA. If sin A = 0.6820, then cos A = . !i 5 5 irport in Chicago at the same time. One plane flies 280 mi/ hr at bearing 55°. The other plane flies 350 mi/ hr at bearing 128°. How far apart are the two planes after 2 hours 15 minutes? : i jr ii; ! !i 1 6. On the 240-yard 4th hole of his municipal golf course, Lion Timber hits a tee shot 165 yards but 10° off the line to the flag. The cup is at the center of a circular green with a 30-foot radius. Find the range of distances Lion can hit the ball to land his second shot on the green. ! i !! 1 ' ii 7. Carla needs to fence her triangular plot of land. The angle between the two shorter sides measures 83°. The shortest side is 122 ft and the longest is 215 ft. How much fencing does Carla need ? What is the area of her plot of land? i ! I! \ ii 4 i! i! i > i ' Discovering Geometry Practice Your Skills ©2003 Key Curriculum Press CHAPTER 12 79 I ; Ztb ~ 2&f htQl . 0\ c J ' ~ • 1 ^ ZZ , **»•*&&+**"* ’"•Vi ' • = 91 ^ Stns . ( ?+ !/ ? - Oil ~ * 9 < crfc z jfxi zrn^'cvi i. SSJ •c>5 " $ - yc ot KWjfcww ~ *r -1 > 3 - 9 wawnwn^v** i/ C ~ ^ ^ * ^ 6 £ QI =3 - g ^S - t t b __ t t ' b _, - ’ £p T ^ ~ . 3 w 2* — ~~“ nggsi op - r5 . , «,>T M * .. p t znhbvot -— - bhi f t zs/ i/ -jbe' o/ - 6£ b/ 5 C^ “ - - £D f: _)±±£Z C c in/ - 6 ! f ^ z b + 2i tyo' b Jwjb)j - - ' ' | *v '0 x/ V ' yo tM b bis - ini azvi ?G o ’ o\ :> A htVVJ ’ : W' B a 6 SVI 1 IL, ( h- ,)f = * y zu- b )^ — / b 'Sl i 5 ——___—_ Lh 3> ^ -— A il ' H 0 • “ t i ; *3. < T• '> ^ y f-V y " £•' Lv * l 3 %H -X - - V £„ u W ’ Fw y “tr. V • * T 4e° ' z Ai ikyn 7/ o ^^ li 76 % , 027 /or> i a * ~ U $6\ '***** • ’* 122 A 1, 93° msi iF) £Vc) e jTci ls + J 2W {p - 7? i/ ml £/ - $\, v»« I fo ^ $„ C jf ^P — £31S 3 Ft “ ~ w ****» «» / MIWIMI ' — - m— i ' f » /S W *»«*««» v** *fi* 07\ tern* a - j Iff . nt / aa . £'• ?.? r c- & M7 d a /s 2 ~~? & V~ 1 ^V*' 1tfnuT ' \i~~

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Lesson 12.5 Problem Solving with Trigonometry

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