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867. If tan θ + cot θ2, find the value of[CBSE 2014]

Answer»

Tana + cota =2take square both sides(tana + cota)² = 2²tan²a + cot²a +2tana.cota =4

we Know,tana =1/cotaso,tan² a + cot²a +2 = 4tan²a + cot² a = 4 -2 = 2



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