Question

if 5 cos theta =4 then evaluate 1-tan^2 theta/1+tan^ 2 theta

Answer 1

Answer:

Step-by-step explanation:

5Cosα = 4

Cosα = 4/5

Cosα = Cos37° (need to remember)

α = 37°

To Find:

(1 - Tan²α)/(1 + Tan²α)

Tan37° = 3/4

(1 - 9/16)/(1 + 9/16)

(7/16)/(25/16)

7/25....<<<<<Answer.

I Hope this will Help You.

Answer 2

Answer: 7/25

Step-by-step explanation:

Please see the attached explanation

Two different explanations are given