If sin(C + D)= √3/2 and sec (C - D)= 2/√3 then what is the value of C and D ?
Answer & explanation
Correct answer: option 1
sin(C + D)= √3/2
C + D = 60° ..............(i)
sec (C - D)= 2/√3
C - D = 30° ................(ii)
Solving (i), (ii)
C = 45°, D = 15°