Correct option is B
Given:
tanθ+cotθ=4
Formula Used:
secθ×cosecθ=tanθ+cotθ
Solution:
Express the given equation in terms of sine and cosine:
cosθsinθ+sinθcosθ=4
sinθcosθsin2θ+cos2θ=4
Using the identity sin2θ+cos2θ=1:
sinθcosθ1=4
This simplifies to:
secθ×cosecθ=4
Square both sides of the equation:
sec2θ×cosec2θ=16
Final Answer
So the correct answer is (b)