Problem 1 :
Express each of the following in the form sin α, where α is acute.
a) sin 10° cos 30° + cos 10° sin 30° Solution
b) sin 67° cos 18° - cos 67° sin 18° Solution
c) sin 62° cos 74° + cos 62° sin 74° Solution
d) cos 14° cos 39° - sin 14° sin 39° Solution
Problem 2 :
Express as a single trigonometric ratio.
a) cos A cos 2A - sin A sin 2A Solution
b) sin 4A cos B - cos 4A sin B Solution
c) cos A cos 3A + sin A sin 3A Solution
1) a) sin 40° b) sin 49° c) sin 136° d) cos 53° |
2) a) cos 3A b) sin (4A - B) c) cos 2A |
May 21, 24 08:51 PM
May 21, 24 08:51 AM
May 20, 24 10:45 PM