Given that g(x)=x^2-4x-5, find (g*g) (-2)
2 answers:
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Answer:
Read below.
Step-by-step explanation:
A perfect cube is a number cubed (If that makes sense). Such as 3³ will equal a perfect cube because it's being multiplied by itself 3 times. 3×3×3=9. It will work for any whole number. You can check if a given number is a perfect cube by using the cube root ().
Hope it makes sense!
Given tan of theta = -2 and pi/2; find cos(2theta)
The identity of cos (2 theta)=
Given tan of theta = -2 and pi/2.
So, let's plug in tan theta= -2
= (Squaring)
= (simplifying)
So, cos ( 2 theta) = -3/5.
Now we can plug in tan theta = π/2
= (Squaring)
= Simplifying
So, cos ( 2 theta)= -3/5 and (4-pi^2)/(4+pi^2)