nu C08X In Exercises 1324 use the fundamental identities and

nu C08X In Exercises 13-24, use the fundamental identities and given information to find the exact values of the trigonometric functions of x. the of the remaining 4 13. cosx =--and sinx =- 4 14. cos x and sin x = -- 15. sinx = and cos x 1 / V3 6. sin x = and cos x =-

Solution

13) cosx =-3/5 ,sinx=4/5

tanx =sinx/cosx =(4/5)/(-3/5)= -4/3

cot x =cosx/sinx =(-3/5)/(4/5)=-3/4

cscx =1/sinx =1/(4/5)=5/4

secx=1/cosx=1/(-3/5)=-5/3

14)

cosx =3/5 ,sinx=-4/5

tanx =sinx/cosx =(-4/5)/(3/5)= -4/3

cot x =cosx/sinx =(3/5)/(-4/5)=-3/4

cscx =1/sinx =1/(-4/5)=-5/4

secx=1/cosx=1/(3/5)=5/3