Question

Solve with reasons.
If 3 secA-5=0, then cotA=
a.5/3
b.4/5
c.3/4
d.3/5

Answer 1

Answer:

ANS is C

Step-by-step explanation:  

• 3secA-5=0
• 3secA = 5
• secA = 5/3
• 1/cosA = 5/3
• cosA = 3/5
• by doing hypothesis you will get 4 as a side
• sinA = 4/5
• cot A = cos A/sinA
• cot A = 3/4

Answer 2

Answer:

c) 3/4

Step-by-step explanation:

3secA-5=0

3secA=5

secA=5/3

secA^2=25/9

1+tanA^2=25/9

tanA^2=25/9-1

tanA^2=16/9

tanA=4/3

cotA=3/4