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2) Express sin 75degree + cos 65degree in terms of trigonometric ratios of angles between odegree & 45degree.

3) Is it right to say that sin (A+B) = sin A + sin B? Justify your answer.

4) Show that (cosec tita - cot tita)2 = 1-cos tita / 1+cos tita

5) If sec tita + tan tita = p, then what is the value of sec tita - tan tita ?

Hope it will help you.

2.find the other angle abc of a triangle whose a=60,b=80,c=?

3.state pythagoras theorem of triangle abc and prove hypotenous square=sum 0f square of other two sides?

4.tan30degree=?

5.base angle of isoscles triangle are equal?true or false