Question

cot(90° − x) = 1 The value of x that satisfies this equation is Blank °.

Answer 1

Answer:

$x=90\degree$

Step-by-step explanation:

The given trigonometric equation is

$\cos(90\degree -x)=1$

We take the inverse cosine of both sides to obtain;

$(90\degree -x)=\cos^{-1}(1)$

$(90\degree -x)=0$

Group similar terms t obtain;

$-x=0-90\degree$

$x=90\degree$

Answer 2

Answer:

The correct answer is x = 90°

Step-by-step explanation:

It is given that, cos(90° − x) = 1

To find the value of x

To find the value x, we have to find cos inverse of 1.

cos(90° − x) = 1

90 - x = cos⁻¹ (1)

90 - x = 0

x = 90°

Therefore the value of x is 90°.

The correct answer is x = 90°