65% is
<u>65
</u>100
<u>
<em /></u><em />Which is equal to 13/20
Answer:
D
Step-by-step explanation:
it is D i did this quiz before.
Given : tan 235 = 2 tan 20 + tan 215
To Find : prove that
Solution:
tan 235 = 2 tan 20 + tan 215
Tan x = Tan (180 + x)
tan 235 = tan ( 180 + 55) = tan55
tan 215 = tan (180 + 35) = tan 35
=> tan 55 = 2tan 20 + tan 35
55 = 20 + 35
=> 20 = 55 - 35
taking Tan both sides
=> Tan 20 = Tan ( 55 - 35)
=> Tan 20 = (Tan55 - Tan35) /(1 + Tan55 . Tan35)
Tan35 = Cot55 = 1/tan55 => Tan55 . Tan35 =1
=> Tan 20 = (Tan 55 - Tan 35) /(1 + 1)
=> Tan 20 = (Tan 55 - Tan 35) /2
=> 2 Tan 20 = Tan 55 - Tan 35
=> 2 Tan 20 + Tan 35 = Tan 55
=> tan 55 = 2tan 20 + tan 35
=> tan 235 = 2tan 20 + tan 215
QED
Hence Proved
As we know that the sum of two sides of a triangle is greater than the third side ...
Option A is correct because 4+5=9>8
Option B is correct because 9+12=21>15
Option C is correct because 12+5=17>13
Hope it helps.....
Answer:
Step-by-step explanation:
Given
Economic system Q is given by
also 
if 
substitute these values
differentiate w.r.t to L to get 
