Question

if cos a =4/5then tan a=​

Answer 1

Answer:

tan a=¾

Step-by-step explanation:

• cos a =4/5
• cos ² a=16/25
• 1-sin ² a=16/25
• sin ² a=9/25
• sin a=3/5

• then, tan a=sin a/cos a
• tan a= (3/5)÷(4/5)
• tan a=¾