Question

plzz solve this help me yaar help karo​

Answer 1

Answer:

Step-by-step explanation:

6.d (if A+B =90°, tanAtanB=1)

7. a (A+B+C=180°, sin(B+c/2)= sin(90-A/2)= cos A/2 ).

8.c(by def of TanA)

9.c (by def of sinA)

10.B (-cos2A)