Day 385: NDA Maths

1. A.
   $(x-y)(y-z)(z-x)$
2. B.
   $(x-y)(y-z)$
3. C.
   $(y-z)(z-x)$
4. D.
   $(z-x)^2(x+y+z)$

Tap an option to check your answer.

1. A.
   $\dfrac{1}{3}$
2. B.
   $\dfrac{2}{3}$
3. C.
   $\dfrac{4}{9}$
4. D.
   $\dfrac{5}{9}$

Tap an option to check your answer.

1. A.
   $\dfrac{\sqrt{5}-1}{\sqrt{10+2\sqrt{5}}}$
2. B.
   $\dfrac{\sqrt{5}-1}{\sqrt{10+\sqrt{5}}}$
3. C.
   $\dfrac{\sqrt{10+2\sqrt{5}}}{\sqrt{5}-1}$
4. D.
   $\dfrac{\sqrt{10+\sqrt{5}}}{\sqrt{5}-1}$

Tap an option to check your answer.

1. A.
   1
2. B.
   $\cos\theta$
3. C.
   $\sin\theta$
4. D.
   $\cos 2\theta$

Tap an option to check your answer.

1. A.
   0.5
2. B.
   0.4
3. C.
   0.3
4. D.
   0

Tap an option to check your answer.