(1) A triangle has sides 8cm and 5cm and an angle of 90°between them calculate the smallest angle of the triangle .
(2) solve the following equations:
(a) cos thita =sin (thita +30°)
(b)cos 2thita=sin(thita+10°)
(C) sin3thita=sin(thita -60°)
(d) sin(3thita+30°)=sin 4thita
(e) sin3thita =cos 4thita?
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Asked by Aiyel9 on 11th June, 2020
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