Find the distance travelled by a 40 cm diameter wheel to cover a distance of 176 meters? Using (π=22/7)

If x+ y=90°, then what is  the value of $$ {\sqrt{cosx.cosecy-cosx.siny}}$$?

If tan A=n tan B and Sin A= m Sin B, then the value of Cos²A is

The value of sin²22° + Sin²68°+ Cot² 30° is:

In the given figure BC=15 cm and Sin B=4/5.  then find out the value of AB?

If (a-b)=-3 , (b-c)=5 and (c-a)=-2, then the value of $$ {a^{3}+b^{3}+c^{3}-3abc\over a+b+c}$$.

If $$ {x=a^{2\over3}-a^{-2\over3}}$$ then the value of $$ {x^{3}+3x}$$.

If $$ x=\sqrt{\sqrt{5}+1\over {\sqrt{5}-1}}$$ then the value  of $$ {5x^2-5x-1}$$ will be: