Question:
If tan x = cot(2x − 15°), find x.
यदि tan x = cot(2x − 15°), तो x ज्ञात कीजिए।
Options:
- a) 30°
- b) 35°
- c) 22.5°
- d) 27°
- a) 30°
- b) 35°
- c) 22.5°
- d) 27°
correct answer : b)
Explanation:
tan A = cot B implies A + B = 90°. So, x + 2x – 15° = 90° => 3x = 105° => x = 35°.
tan A = cot B का अर्थ है A + B = 90°. इसलिए, x + 2x – 15° = 90° => 3x = 105° => x = 35°.