- Evaluate the expression ⇨ (-6) squared.
This will be equal to..
Multiply -6 by itself (squaring a number means to multiply the number by itself twice)
-6 multiplied by-6 will get you 36 as the answer.
There are 300 students. for every 8 are boys, and for every seven are girls. how many boys?
1 answer:
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Given :
To Find :
All real value solution of given equation.
Solution :
Simplifying given equation, we get :
sec x( sec x + 2 ) = 0
sec x = 0 and (sec x + 2) = 0
For, sec x = 0 :
x = not defined.
For, (sec x + 2) = 0 :
cos x = -1/2
x = cos⁻¹( -1/2 ) = 2π/3
Therefore, general solution is ( 2nπ ± 2π/3 ), n ∈ Z⁺ .