Answer:
2√61/19
Step-by-step explanation:
sin^2 x = 1 - cos^2 x
= 1 - (3√13/ 19)^2
= 1 - 117/361
= 244/361
sin x = √244/19
= 2√61/19.
2. -28
5. -60
8. -135
The answers are above. :)
Answer:
144 
Step-by-step explanation:
2x^2 if x=1/8 is 1/16
4x^2 if x=1/8 is 1/2