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Q28 Prove that: (๐๐๐ ๐๐๐ด โ ๐ ๐๐๐ด)(๐ ๐๐๐ด โ ๐๐๐ ๐ด) = 1 tan๐ด+cot๐ด .
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ะะพะบะฐะทะฐัั ะพะฟะธัะฐะฝะธะต
Q28 Prove that: (๐๐๐ ๐๐๐ด โ ๐ ๐๐๐ด)(๐ ๐๐๐ด โ ๐๐๐ ๐ด) =
1
tan๐ด+cot๐ด
.
1
tan๐ด+cot๐ด
.