Question

If Secθ = 11/5 find cos⁡θ *​

Answer 1

Answer:

4√6 / 11

Step-by-step explanation:

Sec = 1 / Sin = Hypotenuse / Perpendicular = 11 / 5

Using Pythagoras Theorem,

11^2 = 5^2 + base^2

121 = 25 + base^2

base^2 = 96

base = √96

base = 4√6

Therefore, Cos = Base / Hypotensuse

= 4√6 / 11

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