Q2 of 123 Page 9

If then write the value of m sin x + n cos x.

Given,



We need to find the value of m sin x + n cos x


Now consider


m sinx + n cos x


[ using the formulas sin 2x & cos 2x in terms of tan x


and ]



[Substituting ]








= n


Hence the value of m sin x + n cos x = n.


More from this chapter

All 123 →
10

Prove that:

 1

If then write the value of k.

3

If then write the value of

4

If then write the value of in the simplest form.