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29

Prove that:

RHS

__We know that cos(A +B) = cosA cosB__ __-__ __sinA sinB__

= LHS

Hence, proved.

29

6

If SinA = 1/2, cosB = , where π/2<A < π And 0 <B < π/2, find the following:

(i) tan(A +B)(ii) tan(A -B)

10

Prove that:

12

Prove that:

12

Prove that:

12

Prove that:

13

Prove that:

16

Prove that:

16

Prove that:

16

Prove that:

16

Prove that:

17

Prove that:

18

Prove that:

29

Prove that:

29

Prove that:

29

Prove that: