Advertisements
Advertisements
प्रश्न
Express cot 78° + sec 64° in terms of trigonometric ratios of angles between 0° and 45°.
बेरीज
Advertisements
उत्तर
Given: cot 78° + sec 64°.
Step-wise calculation:
1. Use complementary-angle identities:
cot θ = tan (90° – θ) and sec θ = cosec (90° – θ)
2. cot 78° = tan (90° – 78°)
= tan 12°
3. sec 64° = cosec (90° – 64°)
= cosec 26°
cot 78° + sec 64° = tan 12° + cosec 26°.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
