Question

if cos O=4/5 then tan =
O 3/5
O 3/4
04/3
05/3​

Answer 1

Answer:

3/4

Explanation:

According to the question,

cos A = 4/5 …(1)

We know, tan A = sinA/cosA

To find the value of sin A,

We have the equation,

sin2 θ +cos2 θ =1

So, sin θ = √ (1-cos2 θ)

Then, sin A = √ (1-cos2 A) …(2)

sin2 A = 1-cos2 A sin A = √(1-cos2 A)

Substituting equation (1) in (2), We get,

Sin A = √(1-(4/5)2) = √(1-(16/25)) = √(9/25) = ¾.

Answer 2

Answer:

Please mark brainlist to above one

Electromagnetic radiation, in classical physics, the flow of energy at the universal speed of light through free space or through a material medium in the form of the electric and magnetic fields that make up electromagnetic waves such as radio waves, visible light, and gamma rays.