Find the exact value of the expression whenever it is defined.

Question

Find the exact value of the expression whenever it is defined. (If an answer is undefined, enter UNDEFINED.)

 

*Please give correct answer so i can compare it with the answer i got.

 

(a)    

sin sin⁻¹ 

5

9

 

 

(b)    

cos cos⁻¹ − 

5

7

 

 

(c)    

tan[tan⁻¹(−12)]

 

Answer 1

The functions are inverses of each other: sin ( sin^-1x) = x.

 

Now following that rule, complete the three.