Q10 of 90 Page 7

If A + B = C, then write the value of tan A tan B tan C.

A+B=C


tan A + tan B = tan C(1- tan A tan B)


tan C – tan A – tan B = tan A tan B tan C.


More from this chapter

All 90 →
8

If then write the value of tan x tan y.

 9

If then write the value of ab + bc + ca.

 11

If sin α – sin β = a and cos α + cos β = b, then write the value of cos (α + β).

 12

If and then write the value of α + β lying in the interval (0, π/2).