EasyPhysics1Units and Measurements, Mathematical Tools
+4 / -1
The value of sin (−150°) is
A
√3/2
B
−√3/2
C
1/2
D
−1/2
Explanation
Use the identity sin(−θ) = −sin(θ). So, sin(−150°) = −sin(150°). Now, 150° = 180° − 30°, and sin(150°) = sin(30°) = 1/2. Therefore, sin(−150°) = −1/2.
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