38. The difference of the place values 47.
of two 7’s in the number 178.6758
1) 69.3
2) 69.93
3) 70.07 4) 70.9

1 thought on “38. The difference of the place values 47.<br />of two 7’s in the number 178.6758<br />1) 69.3<br />2) 69.93<br />3) 70.07 4) 70.9”

1. Answer:

   ⁶l

   Step-by-step explanation:

   On changing into sin and cos, we get

   LHS cos(A−B)cos(A+B)sin(A+B)sin(A−B)=cos2A−sin2Asin2A−sin2B

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