Find the signs of the following: (i) `sin 300^@` (ii) `cos 400^@`​

If triangle ABC has AB = BC and /_B = 90^@ . Find the values of the following: (i) sin A (ii) cos A

Find the values of the following: (i) sin75^(@) (ii) cos15^(@)

Find the periods of the following : (i) |cos x| (ii) tan 4x

(a) Find the value of followings : (i) sin 150^(@) , (ii) cos 135^(@) , (iii) cos (-30^(@)) , (iv) tan 225^(@) . (b) If cos theta =(4)/(5) . Find the value of sin theta and tan theta . (c) Find the value of sin ^(-1)(1) .

Find the value of the following (i) sin105^(@)+cos105^(@)

Find the values of of the following: i) cos 135^(@) ii) sin(-780^(@)) iii) "cosec" 1920^(@)

Find the period of the following fuctions: (i) sin2x (ii)cos3x (iii) tan2x

Find the sign of the : cos(-2000^(@))

In Fig. 14.13, AD=DB and /_B=90^@ then find the values of the following (i) sin theta (ii) cos theta (iii) tan theta