Question

If cosA = 7/9, then cot²A =



(a) 49/72
(b)49/52
(c)49/32
(d)49/62​

Answer 1

Answer:

(c)49/32

Step-by-step explanation:

cosA = 7/9

secA = 1/cosA

        = 9/7

We know that,

sec²A-tan²A=1

(9/7)² - tan²A = 1

tan²A = 81/49 - 1

tan²A = (81-49)/49

tan²A = 32/49

Taking reciprocal of these,

1/tan²A = 49/32

∴cot²A = 49/32

Answer 2

Step-by-step explanation:

49/72 is the answer.....pls like..comment and follow me