Question

Find the exact value of

sin A (1-tan A) if cos A=12/13
​

Answer 1

Answer:

cosA= 12/13

sin A = √ 1-144/169

sin A = √ 25/169

sin A = 5/13

tan A = sin A/ cos A

tan A = 5/12

sin A (1-tan A)= 5/13(1-5/12)

= 5/13 x 7/12

= 35/156

Answer 2

Answer:

35/ 156

Step-by-step explanation:

Hope it's helpful