We write tan =sin / cos...... And cos = 1/sec..so why we can\'t write cos =sin/tan........

We write tan =sin / cos...... And cos = 1/sec..so why we can\'t write

1.	We write tan =sin / cos...... And cos = 1/sec..so why we can\'t write cos =sin/tan........
Answer» Dedia.... Most welcome.. Ab aap BHI mere question ka motivational answer de dijiye Thanks for your motivational answer..... ? Because tan is equal to sin/cos is an identity which we can use directly but cos is equal to sin/tan is derived from that.