Question

choose the correct option​

Answer 1

Given :- (from image.)

• In ∆LMN , ∠M = 90° .
• ∠L = θ .
• LM = 12 .
• MN = 5 .

To Find :-

• cos θ = ?

Solution :-

In Right angled ∆LMN, we have,

→ LN = √(LM² + MN²) { By pythagoras theorem. }

→ LN = √(12² + 5²)

→ LN = √(144 + 25)

→ LN = √(169)

→ LN = √(13)²

→ LN = 13 .

then,

→ cos θ = Base / Hypotenuse .

→ cos θ = LM / LN

→ cos θ = (12 / 13) (B) (Ans.)

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Answer 2

Answer:

Answer= 5/13

Step-by-step explanation:

cos theta = opposite/hypotenuse