Find the values of
P(65,15)

Ifsin(A-B)= sin A cosB-cos A sin B and cos(A-B) = cosA cosB + sin A sin B. Find the values of sin 15^@ and cos 15^@ .

3,x,9 are in A.P . Find the value of x

Find the value of : (37)+(-2)+(-65)+(-8).

Find the value of : tan 15^@

Find the value of 21.05-15.27

Find the value of : cot ((-15 pi)/4) .

Find the value of : 21.05 - 15.27

Find the value of x , if x/5 + 1 = 1/(15)

Find the value of r, if (i) .^(11)P_(r)=990 (ii) .^(8)P_(5)+5*^(8)P_(4)=^(9)P_(r)