CBSE Class 10 Answered
prove that
Asked by Manisha Vadagave | 15 Sep, 2013, 08:02: PM
Expert Answer
cos-sin = sin
Squaring both sides, we get,
cos2+sin2-2 cossin = 2sin2
cos2-sin2-2 cossin = 0
(cos-sin) (cos+sin)-2 cossin = 0
sin (cos+sin) = 2 cossin
cos+sin = cos
Answered by | 15 Sep, 2013, 09:45: PM
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