Find all solutions of #sintheta# =0.5 in the region 0 #<=theta>=# 720#*# ?

1 Answer
Nghi N
Dec 13, 2017

#30^@; 150^@; 390^@; 510^@# in the interval (0, 720)

Explanation:

#sin x = 1/2#
Trig table and unit circle gives -->
#x = 30^@# and #x = 150^@# for the interval (0, 360)
#x = 360 + 30 = 390^@# and
#x = 360 + 150 = 510^@# for the interval (360, 720))

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