Question
Question: Sin (2sin<sup>–1</sup> 0.8) =...
Sin (2sin–1 0.8) =
A
0.96
B
0.48
C
0.64
D
None of these
Answer
0.96
Explanation
Solution
sin (2 sin–1 0.8) = sin[sin−1{2(0.8)1−(0.8)2}]
= (1.6) 1−.64 = (1.6) (0.6) = 0.96
Sin (2sin–1 0.8) =
0.96
0.48
0.64
None of these
0.96
sin (2 sin–1 0.8) = sin[sin−1{2(0.8)1−(0.8)2}]
= (1.6) 1−.64 = (1.6) (0.6) = 0.96