Question

sin90/cos45 =? sin90/cos45=sin90/sin45=2. sin90/cos45=1/1/√2=√2. so,which one is correct​

Answer 1

Answer:

So, sin90/cos45=1/1/√2=√2 is correct. Please mark me as brainliest.

Step-by-step explanation:

$\frac{sin90^0}{cos45^0} \\\frac{1}{\frac{1}{\sqrt{2}}}$

= √2

Also, cos 45° = sin 45° = 1/√2

sin90/cos45=sin90/sin45=1/1/√2 = √2 and not 2. (You cannot cancel sin even if it is in both numerator and denominator of sin 90/sin 45)

Answer 2

To find :sin90/sin45=?

Solution: we know ,

Sin90=1 using (sin theta=Perpendicular/hypotenuse),

Cos 45=1/root 2 (using cos theta=base/hypotenuse)

Now on dividing both :

We get sin90/ cos45= (1)/(1/root2)

= root 2

Ans: Correct answer is-: sin90/ cos45= root2