Question

If,

sinø=1/√5

Then Will ,,

cosø=2/√10 ??

Give Equation[must]

No spamming

Answer 1

Heya Frnd ......... ☺

We know that Sin²∅ + Cos²∅ = 1

So,

Cos ∅ = 1 - 1/5

=> 5-1/5

=>Cos²∅ = 4/5 .......... ★ANS★

So,

Cos∅ = 2/√5.......... ★ANS★

So,

Cos∅ ≠ 2/√10
______☺☺☺______

HOPE IT WILL HELP U...........✌

Answer 2

Hey there! ☺☻☺

Given,
Sin ø=1/√5
So, Perpendicular = 1 and Hypotenuse = √5

Using Pythagoras,
B = √H² - P² = √(√5² - 1²) = √4

Now, 
Cos ø = Base / Hypotenuse = √4 / √5

Hence, Cos ø ≠ 2/√10

Hope It Helps You! ☺☻☺