Question

If ,
sinø=1/√5 then will,,

cosø=2/√10???

Give the Equation.[Must]

Correct Answer Needed,,,No Spamming Plz

Answer 1

Hi friend,

Sin@ = 1/✓5 = P/H

P = 1 , H = ✓5 , B = ?

We know that,

(H)² = (B)² + (P)²

(✓5)² = (B)² + (1)²

(B)² = (✓5)² - (1)²

(B)² = 5-1

(B)² = 4

B = ✓4 = 2

Therefore,

Cos@ = B/H = 2/✓5

Hence,

Cos@ is not equal to 2/✓10

Answer 2

Hi there!

•sinø = 1/√5 = Perpendicular / Hypotenuse

Hence, Perpendicular = 1
Hypotenuse = √5
Base = ?
For finding the value of base we can use Pythagoras theorem,
(Base)² = (Hypotenuse)² - (Perpendicular)²
(Base)² = (√5)² - (1)²
(Base)² = 5 - 1
(Base)² = 4
Base = √4
Base = 2

Now,

• cosø = Base / Hypotenuse
cosø = 2 / √5

Therefore, cosø ≠ 2/√10

HOPE IT HELPS!