Comment the argument.
because of sin0+sin90=sin(0+90)=sin90=1
so sin30+sin60=sin(30+60)=sin90=1
Trigonometric Relations
2009-08-04 10:31 pm
回答 (1)
2009-08-04 10:40 pm
✔ 最佳答案
sin 0 = 0, so should not be used to add, subtract, multiply or divide . This is similar to :2 x 0 = 0
3 x 0 = 0
so 2 x 0 = 3 x 0
so 2 = 3 ???
2009-08-04 14:41:56 補充：
Also, sin is a function that does not follow distributive law. Just like sqrt ( 3 + 2) is
not equal to sqrt 3 + sqrt 2.
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