Name D ate H|.n-eI,:*E, Use a calculator to approximate the measure of oas'' (#) lA to the nearest tenth ir,,qir'i Solve the right triangle. Round decimal answers to the nearest tenth. ,ffir, \o/ 5.O in..} 7 L K 9.u si,?- /7+:\' E 2rt 10. + fl, v 10.6 E .e F M =c #r ft >: c G a ,'t --o 0,v '. = 'a :> E s 6t "bJ lA be an acute angle in a right triangle. Approximate the measure of lAto the nearest tenth of a degree, j" rs. sin,4: a.ol"l\f,o ,". cos-,4: o.zs 13. sinl : o.ro {,?-o 14. tanA :r.glo0 1;,5o 17, tanA: t.+$I,f 18. cosl : o.illi6,1' 19. sin A : o.u /ln ,l' zo. cos ,4 : 0.05 g 7 , lo 23. sinl : 1.0 4n' 24. sinl :0 0 21, tanA: r.o i-{5 ,vo 22. cos,4 : o qd lv Let Geometry 96 Chapter 7 Hesource Book = E 5 o cf c o c -= a o (J Name Date rt:tgi I I.r Practice C contnued .i* .r r,. " IlForusewithpages4134Sg ,,ltrr' tt( -=:lt:_-_-_--10.- 25. Golf fhe angle of depression from the tee box to the green is 10o on apar 3,185 yard hole. How ---:"_____ ... -.----.i F)( ,....'. much higher is the tee box than the green? Round io the nearest yard. '),'t . ,l ' Ramp You are designing -!:! 185 yd Not drawn to scale J"' a ramp where the vertical ramp angle l-t., (i' '' F i 'zt -l horizontal.distance I \ i \zx J *b,ri '[,t) 325'ft A B Z {, t", (', tlZ :- ' [.';--' )if r .. :)/' ,) ta Ll'].' t' x- L.,lt . Lll.'/t i i, *'rt 1l '"'---*--;d...,.. " ?'t tr'J-rl7 - -.F ftL. " In Exercises 28-3O, use the following information. Fireworks You are watching /vi | ..- . 27. Bridge A surveyor needs to find the distance BC across a lake as part of a project to build a bridge. The distance from point I to point B is 325 feet. The measurement of angle A is 42" and the measurement of angle B is 110". What is the distance BC across the lake to the foot?. , i -lzir rise d ,, \--:*,-,,:-.. ..t T horizontal distance is twice as long as the vertical rise. What will be the ramp angle to the nearest tenth of a degree? nearest I t-'" X V:(- . c1!t" . It a fireworks display where you are standing 290 feetbehind the launch pad. The launch tubes are aimed directly away from you at an angle of 65" with the ground. The angle of elevation for you to see the fireworks is 40". C G o 'r(i ,l /d . ]J r- . .\ r;t r,., -,r*ru E o f?{ .c ': C o - .o o .= p_2e0 28. K 1 ft_- A4 x \"niii')), (' l,t{'t;' )t'e'j 3,li + ,Y 4'it,\ " .2 ' ltl ft"X 2,ti.'i.i ., i,'itrit',. To the nearest foot, what is the horizontal distance from the launch pad to the ignition point of the fireworks? o o = o t " * (,:'iii =O E o r, '-1, Jeri tn g ,. -- iiir'*')ifry; {r.,) -J x lriolk'5- o -o= .2 u , O 29. To the nearest foot, what is the height of the fireworks when they ignite? a 30, What is the measure of anele,4? o Eo '= o O U Ac{ lan 4o ,, -fr J'la t 1 / Ir,,t'(;nl'2;' ._tl/ '4e l8b qflt(tnn'1fi) = {'''t" -t t.rb'\ 7ti qc, -' 51," ,-c ', ----' = A5 tl (-S==*;--.-. t'114 __, 'n 4ti0f .Li - -.F- W:if'yc,ril+it" Cvir'ifhrtrq,,,,f*rir r *l( ulrrtu,r di 6 ;q 1 , rlr ft't,'i illr: 'fXr * .chaorerTn.rr:;r"IB"fil (r l,i 97