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2016-01-29T16:14:14+05:30
Cot50°.cot40° = tan(90-50)×cot40° = tan40°×cot40° = tan40°×1/tan40° = 1.......hence the simplest value is 1.....
2 3 2
Yr......its OK..
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2016-01-29T17:16:02+05:30
The answer is 1 Cot 50 x cot 40 cot 50/tan 40 By complementary angles cot 50/cot 50=1
1 2 1