Easy
1 point
ID: #24138
Question
secA + tanA = 5/2 হলে, secA – tanA= ?
Options
1
1/2
Correct Answer
2
1/5
Correct Answer
3
2/5
Correct Answer
4
5/2
Correct Answer
Explanation
আমরা জানি, sec²A - tan²A = 1। বা, (secA + tanA)(secA - tanA) = 1। মান বসালে, (5/2)(secA - tanA) = 1। সুতরাং, secA - tanA = 2/5।