Question

In a right-angled triangle, it is given that angle A is an acute angle and that tan A=5/12.
Find the values of:
(1) cos A
(ii) cosec A-cot A.​

Answer 1

tan A=5/12

so sides

5,12,x

x=13(by Pythagoras theorem)

so,cos A=12/13

cosecA-cotA=13/5-12/5

cosecA-cotA=1/5