Question

If in ∆ABC tanA=3/4 and angleC=90° then find.​

Answer 1

Step-by-step explanation:

Given ∠B=90

0

∴B−C=A

Thus using above formula, tan(

2

B−C

)=

b+c

b−c

cot

2

A

⇒tan

2

2

A

=

b+c

b−c

Answer 2

Answer:

43/18

Step-by-step explanation:

given,tanA=3/4

then perpendicular=3 and base=4 so from pythagoras theorem, we get hypotenuse=5.

therefore,secA=hypotenuse/base and tanA=penpendicular/base

then, sec2A+2tan2A

=(5/4)2 +2*(3/4)2

=25/16 +2*9/16

=25/16+9/8

=25+18/16

=43/16

=2.68