1) square root of 112 --> split into 2 radicals
2) square root of 16 and square root of 7
3) solve
answer: 4 square root 7
For the second example, x should be 25, not 80.
Answer:
NOT! (10, 1)
Step-by-step explanation:
Answer:
cos 2 x=1-sin^2 x
Step-by-step explanation:
x=-135°
cos 2x=cos (-270)=cos (-270+360)=cos 90=0
or cos 2x=1-2sin ²x=1-2(sin (-135))²
=1-2(-sin 135)²
=1-2(sin 135)²
=1-2(sin (180-45))²
=1-2(sin²45)
=1-2 (\frac{1}{\sqrt{2}})²
=1-1
=0
Answer:
ln6 = 1.79
Step-by-step explanation:
The logarithm here has base e so it is a natural logarithm.
According to the product rule of logarithms
∴ ln6 = 1.79
