InterviewSolution
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InterviewSolution
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Thedawceput into the computer processed byThe processed datinos |
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Answer» Taking LHS:sin 105° + COS 105°cos (90° - 105°) + cos 105°cos 15° + cos 105°cos C + cos D = 2(cos(C+D)/2)(cos(C-D)/2)2COS(120°/2)cos(90°/2)2cos60°cos45°2(1/2)cos45°cos45°= RHSExplanation:Taking LHS:sin 105° + cos 105°cos (90° - 105°) + cos 105°cos 15° + cos 105°cos C + cos D = 2(cos(C+D)/2)(cos(C-D)/2)2cos(120°/2)cos(90°/2)2cos60°cos45°2(1/2)cos45°cos45°= RHS |
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