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17 votes
17 votes
If angle 0 is in quadrant I, what is the value of

sin 0?
(REST OF THE QUESTION IN SCREENSHOT)
please help me its due in a day!! I need proof or explanation

If angle 0 is in quadrant I, what is the value of sin 0? (REST OF THE QUESTION IN-example-1
User Eiza
by
2.7k points

1 Answer

22 votes
22 votes

Answer:


the \: answer \: is \: c \: = - ( √(14) )/(5)

Explanation:


\sin^(2)0 + ( ( √(11) )/(5) ) ^(2) = 1( \sin^(2)0 + \cos^(2) 0 = 1)


{ \sin }^(2)0 + (11)/(25) = 1 \\ { \sin }^(2)0 = (14)/(25)


\sin0_(1) = - ( √(14))/(5) while \sin0_(2) = ( √(14) )/(5)

  • Therfore theta is QI
  • Therfore sin theta >0

  • therefore \: \sin0 = ( √(14) )/(5)
User Katherina
by
2.4k points
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