Easy
1 point
ID: #24831
Question
যদি 1 + tan²θ = 4 এবং θ < 90° হয়, θ = ?
Options
1
30°
Correct Answer
2
45°
Correct Answer
3
60°
Correct Answer
4
0°
Correct Answer
Explanation
1 + tan²θ = 4 => tan²θ = 3 => tanθ = √3 (যেহেতু সূক্ষ্মকোণ)। আমরা জানি, tan 60° = √3। সুতরাং θ = 60°।