Question

Please help me guys??!!!!!!!!! ➕➕➕➕

Answer 1

Refer to attachment...

the answer is 2root3

#hope it help uh.

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Answer 2

Consider the following expression.     tan(θ)−cot(90−θ)+sec(θ)cosec(90−θ)+sin235+sin255tan10 tan20 tan40 tan70 tan80Note that,   cot(90−θ)= tan(θ) and cosec(90−θ)=sec(θ)Also, the trigonometric values tan10 and  tan20 can be expressed as,       tan10=tan(90−80)                 =cot 80 and         tan20=tan(90−70)                 =cot 70 The value of sin235+sin255 can be determined as,        sin235+sin255=sin2(90−55)+sin255                                  =cos255+sin255           ( since sin(90−θ)=cos(θ)  )