10 Likes
Answered By
5 Likes
Find the values of :
(i) 7 sin 30° cos 60°
(ii) 3 sin2 45° + 2 cos2 60°
(iii) cos2 45° + sin2 60° + sin2 30°
(iv) cos 90° + cos2 45° sin 30° tan 45°.