Answer:
(cos^2(x)-1) cot (-x); last expression.
Step-by-step explanation:
You'll first need to simplify the given expression. Then look at each option. To find out whether or not two expressions are equivalent see if they have the same value irrespective of the value of the variables in them.
1) (1-cos^2(x)) cot (-x) is equivalent
2) (cos^2(x)-1) cot(x) is equivalent
3) (sin62(x)-10 tan (x) is equivalent
4) (cos^2(x)-1) cot (-x) is not equivalent.
Answer:
second sum
Step-by-step explanation:
Note the given terms are perfect cubes, that is
343 = 7³
512 = 8³
729 = 9³
1000 = 10³
The sequence continues in this way as indicated by the dots ......
The first term is 343 and occurs when n = 7
The sequence is infinite, thus can be expressed as
∑ n³ from n = 7 to infinity
Answer:
x = 10, -2
Step-by-step explanation:
Your Welcome my friend :)
Answer:
14x + 8
Explanation:
⇒ 4(5x+5) - 3(2x + 4)
distribute inside parenthesis
⇒ 4(5x) + 4(5) - 3(2x) - 3(4)
multiply the variables
⇒ 20x + 20 - 6x - 12
collect like terms
⇒ 20x - 6x + 20 - 12
subtract like term
⇒ 14x + 8
Triangle has 3 equal sides so it is equilateral triangle.
<A = <B = <C = 60 degrees
Answer
C. 60°
