Question

39 If secA = 25/7 then sinA = ?
O 7/24
O 24/7
O 24/25
O None of these​

Answer 1

Answer:

24/25

Step-by-step explanation:

• as secA =25/7
• therefore H =25 .B=7
• by Pythagoras theorem P √H ^2 -B^2
• =✓25^2-7^2
• =√625-49=√576=24
• hence sin A =P/H=24/25