Question

Cos inverse sin 2 theta​

Answer 1

Answer:

Step-by-step explanation:Cosine

Right-Angled Triangle

The Cosine of angle θ is:

cos(θ) = Adjacent / Hypotenuse

And Inverse Cosine is :

cos-1 (Adjacent / Hypotenuse) = θ

trig example

Example: Find the size of angle a°

cos a° = Adjacent / Hypotenuse

cos a° = 6,750/8,100 = 0.8333...

a° = cos-1 (0.8333...) = 33.6° (to 1 decimal place)

Tangent

Right-Angled Triangle

The Tangent of angle θ is:

tan(θ) = Opposite / Adjacent

So Inverse Tangent is :

tan-1 (Opposite / Adjacent) = θ