Simplify - tanx-(sec^2 / tanx)
1 answer:
Answer:
-cot(x)
Step-by-step explanation:
tanx-(sec^2x / tanx)
Lets get a common denominator of tan
tan x * tan x/ tan -sec ^2 x/ tan x
tan ^2 x - sec ^2 x
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tan x
We know than sec^2 - tan^2 =1 (trig identity) so factor out -1
-1(-tan ^2 x + sec ^2 x)
---------------------------
tan x
-1(1)
---------------------------
tan x
-1
----------
tan (x)
We know 1/ tan x = cot (x)
- cot(x)
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Answer:
Concept: Area
- We are given area hence 78.5 square meters
- We want the radius so we isolate
- Isolate for r to get r= 4.99 or 5 square units approximately
The formula of a slope:
95)
substitute:
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substitute:
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substitute:
OK. I think you already know how to solve it. I will give short solutions now.
98)
99)
100)
101)
102)
103)
104)
Answer:
3pi or approximately 9.42
Step-by-step explanation:
The diameter is 3
The circumference is given by
C = pi *d
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C = 3*3.14
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Answer:
20π
Step-by-step explanation:
Area = πr^2
100π = πr^2
solve for r and r = 10
circumference of a circle is 2πr
therefore 2π×10=20π in
Answer:
A. 3 dimes and 1 Penny
<em>Beat your parents with a broom instead!</em>
