the value of expression [cosec(75°+ 0)-sec(15° + 0)-tan(55°+ 0)-cot(35° + 0) is
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Answer:
cosec(75
0
+θ)−sec(15
0
−θ)−tan(55
0
+θ)+cot(35
0
−θ)
=sec(90
0
−75
0
−θ)−sec(15
0
−θ)−cot(90
0
−55
0
−θ)+cot(35
0
−θ)
=sec(15
0
−θ)−sec(15
0
−θ)−cot(35
0
+θ)+cot(35
0
+θ)
=0
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