If 5 cos θ = 4 sin θ, 0° ≤ θ ≤ 90°, then what will be the value of sec θ ?
Answer & explanation
Correct answer: option 4
5 cos θ = 4 sin θ
cot θ = \(\frac{4}{5}\)
{ cot θ = \(\frac{B}{P}\) }
By using pythagoras theorem,
P² + B² = H²
5² + 4² = H²
H = √41
Now,
secθ
= \(\frac{H}{B}\)
= \(\frac{√41 }{4}\)