<u>To prove the trigonometric equation:</u>
We know that , substitute this in place of 1.
Multiply each term of the first term with each term of the 2nd term.
Group like terms together.
= LHS
RHS = LHS
Hence proved.
One correct answer:
D
Because all of the sides are even, and it has no 90 degree angles.
Area of square = atleast 36 = length *width, where l = w (since it's a square)
If A=36, l = w = 6
If A = 37, l = w = 6.08
if A =38, l = w = 6.16
So the solution set is s => 6 (s is bigger than or equal to 6)