Question

find the hcf of 28 35 49 by set of numbers​

Answer 1

i.e. cosB=-15/8 * 17/15

cosB=17/8

now

sin(A+B)=(-12/13)(17/8)+(5/13)(15/17)

={1/13}(-51/2 + 75/17)

=(1/13)(-710/34)

=-710/442

Answer 2

Answer:

your answer is 7

Step-by-step explanation:hope it helped mark as brainliest