Question

11.) If cosA = 4/5, find the value
of 4 + 4tanA *​

Answer 1

Answer:

4.052

Step-by-step explanation:

if cosA = 4/5 then,

adj side= 4

hypotenuse= 5

then, opp side= 3 (Pythagoras theorem)

hence, tanA = 3/4

so, 4+4tan(3/4)

=4.052

Answer 2

Answer:

7

Step-by-step explanation:

Given, cosA=4/5

sinA=√(1-cos^2A)

=√(1-(4/5)^2)

=√(1-16/25)

=√(9/25)

=3/5

we know that,tanA=sinA/cosA

=(3/5)/(4/5)

=3/4

now, 4+4tanA=4+4(3/4)

=4+3 = 7

please mark as brainliest if you understand ☺️