Step-by-step explanation:
Let us take a nominal square of area 25 cm².
- It's length of one of it's sides will be √25 = 5 cm².
- It's perimeter will be 5*4 = 20 cm.
So, in this question, we can say that:-
a. The length of one of its sides will be <u>less than 5 cm</u><u>.</u>
b. Its perimeter will be <u>less than 20 cm.</u>
Hope it helps :)
2 hrs 37 mins is how long the game lasted
Answer:
<u>Part A</u>:
( is equal to all real numbers)
<u>Part B</u>:
Step-by-step explanation:
<u>Part A</u>:
Given , combine like terms:
Add 7 to both sides:
Since this is merely a true statement for all real numbers (reflexive property), this equation is true for any real value of .
Therefore,
( is equal to all real numbers).
<u>Part B</u>:
Using arbitrary values as requested in part B, verify:
First step: name the sides according to geometry standards, namely, the sides are named the same lowercase letter as the opposing angle. A revised diagram is shown.
Second step: we need to know the relationships of the trigonometric functions.
cosine(A)=cos(63) = adjacent / hypotenuse = AC/AB .................(1)
sine(A)=sin(63) = opposite / hypotenuse = CB/AB .......................(2)
We're given AB=7, so
using (1)
AC/AB=cos(63)
AC=ABcos(63)=7 cos(63) = 7*0.45399 = 3.17993 = 3.180 (to three dec. figures)
Using (2)
BC/AB=sin(63)
BC=ABsin(63) = 7 sin(63) = 7*0.89101 = 6.237 (to three dec. figures).