The picture below has both of the answers to your problem.
Answer:
Sine 30 =

Sine 45 =

Sine 60 =

Cos 30 =

Cos 45 =

Cos 60 =

Tan 30 =

Tan 45 =

Tan 60 =

Step-by-step explanation:
I hope it helps
660,000 when rounded to the nearest ten thousand
540,000 to nearest ten thousand
Please find attached photograph for your answer. Hope it is alright.
Answer:
C) 12√2
Step-by-step explanation:
According to the 45-45-90 triangle x should be a√2 and since a = 12 (in this case) the answer is 12√2.