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Question
In right angled ΔLMN, ∠LMN = 90°, ∠L = 50° and ∠N = 40°, write the following ratios.
- sin 50°
- cos 50°
- tan 40°
- cos 40°
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Solution
(i) sin 50° = `"Opposite side of ∠L"/"Hypotenuse" = "MN"/"LN"`
(ii) cos 50° = `"Adjacent Side Of ∠L"/"Hypotenuse" = "LM"/"LN"`
(iii) tan 40° = `"Opposite side of ∠N"/"Adjacent Side Of ∠N" = "LM"/"MN"`
(iv) cos 40° = `"Adjacent Side of ∠ N"/"Hypotenuse" = "MN"/"LN"`
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