Question

in a sheet of paper answer it​

Answer 1

Answer:

Step-by-step explanation:

Identity used

Sin(90-theta)=cos-theta

Tan(90-theta) =cot- theta

Cos25°/cos25°-cot70°/cot70°-sin90°×cot85°×cot55°×tan60°×tan55×tan85°

1-1-0× √3

Since,

Tan=1/ cot,sin90°=0,tan60°=√3

=√3

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