Question 1: **[2007]**

Answer:

LHS

RHS. Hence Proved.

Question 2: **[2005]**

Answer:

LHS

RHS. Hence Proved.

Question 3: ** [2008]**

Answer:

RHS

LHS. Hence proved.

Question 4: ** [2000]**

Answer:

LHS

RHS. Hence proved.

Question 5: **[2013]**

Answer:

LHS

= RHS. Hence proved.

Question 6: **[2001]**

Answer:

LHS

RHS. Hence proved.

Question 7: **[2002]**

Answer:

LHS

= RHS. Hence proved.

Question 8: **[2006]**

Answer:

LHS

= RHS. Hence proved.

Question 9: ** [2006]**

Answer:

Question 10: ** [2012]**

Answer:

=

=

Question 11: **[2013]**

Answer:

Question 12: ** [2007]**

Answer:

Question 13: ** [2004]**

Answer:

Question 14: Evaluate without using trigonometric tables:

**[2011]**

Answer:

Question 15: Prove that **[2011]**

Answer:

LHS

RHS

Hence Proved.

Question 16: Without using trigonometric tables, evaluate

** [2014]**

Answer:

Given

Question 17: Prove the identity:

** [2014]**

Answer:

LHS

Hence Proved.

Question 18: If , show that **[2001]**

Answer:

Therefore to prove:

LHS

RHS

Therefore LHS = RHS. Hence proved.

Question 19: Evaluate: **[2000]**

Answer:

Question 20: Evaluate: ** [2002]**

Answer:

Question 21: **[2003]**

Answer:

Question 22: Prove that: **[2009]**

Answer:

LHS

RHS.

Hence proved.

Question 23: Prove that: **[2006]**

Answer:

LHS

RHS. Hence proved.

Question 24: Without using trigonometric tables evaluate :

[2010]

Answer:

Given:

Question 25: Without using trigonometric tables evaluate :

** **[2010]

Answer:

Given: