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If sin (A+B) =sin Acos B+cosA sinB and cos (A-B) = cosA cosB+sinA sinB . Find the value of(1)sin 70⁰(2)cos 15⁰ |
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Answer» Step-by-step EXPLANATION: this is the way to SOLVE this. and I THINK the IST part is sin75 not sin70. |
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