Question

sinθ=
b,
a
​
then cosθ=

Answer 1

Answer:

Step-by-step explanation:

Please write your question in proper order

Answer 2

Answer:

√(1 - sin²β)

Step-by-step explanation:

sin²β + cos²β = 1

If sinβ = b ⇒ cosβ = √(1 - sin²β)