Question

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

Answer 1

`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)`