Question

please answer step by step ​

Answer 1

Answer:

2

Step-by-step explanation:

Solve by the trigometric formula

Answer 2

Answer:

Hope it helps!! Mark this answer as brainliest if u found it useful and follow me for quick and accurate answers...

Step-by-step explanation:

tanθ = 20/21

so, by Pythagoras theorem

sinθ =20/29 and cosθ = 21/29

now,

(1-sinθ+cosθ)/(1+sinθ + cosθ)

putting the values,

[1 - (20/29)+(21/29)]/[1 +(20/29)+(21/29)]

=(29-20+21)/(29+20+21)

=30/70

=3/7