Question

Fill up the blanks :
(i) If sin 50°=0.7660, then cos 40°=……
(ii) If cos 44° = 0.7193, then sin 46°=…..
(iii) sin 50°+cos 40° = 2 sin (………)
(iv) Value of sin70°/cos20° is ………

Answer 1

Answer:

3)sin 50+cos 40.

sin 50 +cos ( 90 -50)

sin 50 +sin 50

2 sin 50 answer