Question

Show that,

1. $\frac{SinA+SinB}{CosA+cosB}$ = tan$\frac{A+B}{2}$

2. $\frac{cos4A-cos6A}{sin4A+sin6A}$ = tanA

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Answer 1

Step-by-step explanation:

hope u will understand

Answer 2

Answer:

I hope this helps you....