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Use Inverse Functions to Express Solutions to Trigonometric Equations 13. Solve on the interval [0, 21). 4 cos x-7 cos x + 3
Solve a Right Triangle Pythagorean theorem: d+b = c? 4+B+C =180° sin e OPP hyp cos adi, tan = opp hyp adj b hyp opp sce byp
need help with these 3 homework problems please !!
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1304 Cosse -760sx +3 = 0 ) 4( 1 - 4931 - 2 Cosx +3 so - 4 Cos(cos3-5-5 ) =0 - (40881 -3)(Cx-)=0 Cos1-1 = 0 or, 4Cosa-3=0 Ifa-9 6 By Pythagones theorom B А C-20 atb = c² b = c²a = 20)-( = 400-81 = 319 i b=1319 = 17.86 217.9 Sina -220145 A = 26.457 A

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