Mathematics: Select the correct answer from the drop-down menu. tant = . Therefore, tan(90-A) = (All angle measurements are in degrees.

Select the correct answer from the drop-down menu.

maxout67

25.01.2022

Step-by-step explanation:

The choices to this question are

a.) 1/tan(90-A)

b.) 1/sin A

c.) 1/cos(90-A)

d.) 1/tan A

We know that

$tanx=\frac{sinx}{cosx}$ , which is a trigonometric identity.

If tan(90-A) then,

$tan(90-A)=\frac{sin(90-A)}{cos(90-A)}$

But, sin (90-A)=cosA and cos(90-A)=sinA

So,

$tan(90-A)=\frac{cosA}{sinA}$

Which is the inverse of tangent, so

$tan(90-A)=\frac{1}{tanA}$

Therefore, the right answer is D.

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