" If "P+Q+R=180^(@)" then the value of "p sin(Q-R)+q sin(R-P)+r sin(P-rho)

If P+Q+R=180^(@) then the value of psi n(Q-R)+q sin(R-P)+r sin(P-Q)

If P+Q+R=60^@ , then what is the value of cos Q cos R (cos P-sin P)+ sin Q sin R (sin P-cosP)?

In DeltaP Q R , right angled at Q, P R+Q R=25cm and P Q=5c m . Determine the values of sin P, cos P and tan P .

In DeltaP Q R , right angled at Q, P R+Q R=25cm and P Q=5c m . Determine the values of sin P, cos P and tan P .

If in a triangle PQR; sin P, sin Q, sin R are in A.P; then

If in a triangle PQR; sin P, sin Q, sin R are in A.P; then