Considering the principal values of inverse trigonometric functions, the value of the expression (2 -1 ( 2 13 ) - 2 -1 ( 3 10 ) ) is equal to :
- 3356
- - 3356
- - 1663
- 1663
Answer
(1) 3356
Solution
Let = -1 2 13 = 3 13, = 23
2 = 2 231 - 49 = 4/35/9 = 125
Let = -1 3 10 = 1 10, = 13
2 = 2 131 - 19 = 2/38/9 = 34
(2 - 2 ) = 125 - 341 + 125 34 = 33/2014/5 = 3356
Answer: (1)