Question

if tan A =2 evaluate secA.sinA+tan^2 A-cosecA

Answer 1

Answer: (6 - _/5) ÷ 2

Answer 2

Answer:

Step-by-step explanation:

SecA=1/cosA

CosecA=1/sinA

Putting value in above equation

1/cosA*sinA+tan^2A-cosecA

SinA/cosA+tan^2-cosecA

TanA+tan^2A-1/sinA

2(1+2)-1/sinA

6-1/sinA

Now

SinA/cosA=2

Sin^2A/cos^2A=4

Sin^2A/1-sin^2A

Sin^2A=4/5

So, 6-5/root2