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The value ofcos ( 35^(@) + A)cos ( 35^(@) - B) + sin ( 35^(@) +A)sin ( 35^(@) - B) is equal to(i) sin(A+ B)(ii) sin(A - B)(iii) cos (A+B)(iv) cos(A-B) |
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Answer» `SIN(A+ B) ` |
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