Step-by-step explanation:
For this Q, you should draw a triangle to help you with the values.
cos x =

csc x =

tan x = sin x/ cos x
= 1
cot x = 1
sec x =

x = 45 degrees
To convert our number to scientific notation, we are going to move the decimal point to the right until we have only one non-zero digit to the left of the decimal point, and then, we are going to multiply that number by a negative power of 10 equal to the number of times we moved the decimal point to the right:
<span>
Our number is 0.000000016, so we need to move the decimal point 8 times to the right to have </span>only one non-zero digit to the left of the decimal point (1.6). Since we moved the decimal point eight times to the right, we are going to multiply 1.6 by y a negative power of 10 equal to the number of times we moved the decimal point to the right i.e.

.
So 0.000000016 expressed in scientific notation is 1.6x

, or in calculator notation 1.6E-8
We can conclude that the correct answers are <span>
1.6E-8 and </span><span>
1.6 × 10-8</span>
Answer:
-4+7h
Step-by-step explanation:
Answer:
16$
Step-by-step explanation:
Take away 9 from 17 (17-9=8) and since he used half his allowance on a movie double 8 to get 16$