Question

if cot(90 - theta)=√3 , then cos theta = ?
a)1 b)1/√2 c)1/2 d)0​

Answer 1

cot(90 - theta) = √3

tan theta. = √3

tan theta. = tan 60

theta = 60

cos 60 = 1/2

ans.(a)

Answer 2

Answer:

c)1/2

Step-by-step explanation:

cot(90-Ф) = tan(Ф) = √3

⇒Ф = 60°

now cos (Ф) = cos(60°)

                    = $\frac{1}{2}$

Which is option c)

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