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Question

sin30°cos45°+cot45°sec60°-sin60°tan45°-cos30°sin90°

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Solution

On substituting the values of various T-ratios, we get:

sin 30ocos 45o+cot 45osec 60o-sin 60otan 45o-cos 30osin 90o= 1212+12-321-321= 22+12-32-32= 2+1-232

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