Home › AP EAPCET (Engineering) › Mathematics › Trigonometry: Trigonometric Ratios upto Transformations › Evaluate (sin 40° + sin 20°)/(cos 40° + cos 20°).
Evaluate (sin 40° + sin 20°)/(cos 40° + cos 20°).
A0
B√3
C1
D1/√3
Answer & Solution
Correct answer: D. 1/√3
The ratio becomes 2 sin30° cos10° over 2 cos30° cos10°, which is tan 30° = 1/√3.
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