Trigonometric function relation of the same acute angle sin^2 x + cos^2 x tan A * cot A

Trigonometric function relation of the same acute angle sin^2 x + cos^2 x tan A * cot A

All equal to one
Cot A is the reciprocal of Tan a
The first one is the square of the sine plus the square of the cosine, if it's 1

Trigonometric function problem to find acute angle a 3cos²a+3√ 3sina-5=0

3(1-sin²a)+3√3a-5=0
3sin²a-3√3sina+2=0
sina=(3√3±√3)/6
sina=√3/3,sina=2√3/3
sina<0
So Sina = √ 3 / 3
a=arcsin(√3/3)

Is (a) an acute angle in trigonometric function?

not always
Acute angle in junior high school
We're going to talk about images in high school

What are the values of four trigonometric functions of three special acute angles in RT triangle

30 degree sin30 = 1 / 2 cos30 = 3 / 2 under root, tan30 = 3 / 3 under root, cot30 = 3 under root
60 degrees cos60 = 1 / 2 sin60 = 3 / 2 under roots, cot30 = 3 / 3 under roots, tan30 = 3 under roots
45 degree sin45 = 2 / 2 cos45 = 2 / 2 tan45 = 1

Trigonometric function refers to which kind of triangle, only right triangle? Acute angle triangle, obtuse angle triangle?

Any triangle will do, in fact, is a few publicity

The smallest angle of a triangle is 30 ° and this triangle must be an acute triangle, right?

The smallest angle of a triangle is 30 ° and this triangle must be an acute triangle, right
It can also be an obtuse angle or a right triangle

The largest angle in a triangle is 70 degrees. Classified by angle, this is an acute triangle______ (judge right or wrong)

The largest angle in the triangle is 70 ° and the other two angles are less than 70 ° angle,
A triangle with three acute angles is an acute triangle,
So the original question is correct,
So the answer is: right

Given an acute triangle, the value range of the largest angle

60 ° 〈 = the largest angle ＜ 90 °
Let the largest angle = X
X〈180-X
X ＜ 90 is obtained
3X〉=180
X 〉 = 60

If the largest angle of a triangle is less than 90 degrees, then the triangle must be an acute triangle, right?

Yes; the maximum angle is less than 90 ° and all three angles must be acute angles, so this triangle must be an acute angle triangle

A triangle with an acute angle 【2】 A right triangle has only two acute angles. An equilateral triangle must be an isosceles triangle. Any triangle with at least two acute angles must be an obtuse triangle

Hello, I'm glad to answer your question 1. There is a triangle with an acute angle. The title is incomplete and can't be answered