Question

if 4cotA =3 , find cosec²A - cot²A​

Answer 1

Answer:

cotA=3/4=P/B

cosecA=H/P

H2=3*3+4*4

9+16

25

H=5

sinA= 3/5

cosec=5/3

5/3*5/3=25/9

cot=3/4*3/4= 9/16