Question

If sin (A + B) = 1 and tan (A-B) = 1/13, find the value of:
1. tan A + cot B
2. sec A - cosec B​

Answer 1

Step-by-step explanation:

sin(a+b)=sin90. ,(sin 90=1)

and tan(a-b)=tan30

so, a+b=90.........(i)

and a-b=30........(i)

add (i) and (ii)

2a=120

a=60

putting value of a in (i)

60+b=90

b=30