Question

2. If Cos A=1/2
then the value of Sin A is....​

Answer 1

Answer:

Cos A = B/H

COSA=1/2

H^2=P^2+B^2

2^2=1 +P^2

4-1=P^2

P=√3

SinA =p/h

sina=√3/2

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Answer 2

Answer:

Your Question :--- if cosA is equal to 1/2 , we have to find value of SinA ??

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$\Large\bold{\boxed{\boxed{</strong><strong>√</strong><strong>3</strong><strong>\:</strong><strong>/</strong><strong>2</strong><strong>}}}$

$\rule{200}{4}$

CosA = Base / Hypotenuse

1/2 = Base / Hypotenuse

so, B = 1 , H = 2

we know that,

P² = H²-B²

P = √(H²-B²)

P = √(2)²-(1)²

P = √3

now,

sinA = P/H

sinA = √3/2 (Ans)