Answer:
x=11
Step-by-step explanation:
first you flip the X and the 10, then subtract the 10 on both sides and you should be left with x=11
<u>Answer:</u> logₓ 8
<u>Step-by-step explanation:</u>
5 logₓ2 - logₓ4
= logₓ2⁵ - logₓ4
= logₓ32 - logₓ4
= logₓ(32/ 4)
= logₓ 8
The trigonometric expression tan² x + 1 = sec² x is proved by using the fundamental trigonometric formula and the definition of tangent and secant.
<h3>How to prove a derivate trigonometric formula</h3>
In this problem we must prove the existence of a trigonometric formula by means of definitions of trigonometric functions and the fundamental trigonometric formula.
Step 1 - Introduce the fundamental trigonometric formula and the definitions of tangent and secant:
sin² x + cos² x = 1, tan x = sin x / cos x, sec x = 1 / cos x
Step 2 - Divide each side of the formula by cos² x:
sin² x / cos² x + cos² x / cos² x = 1 / cos² x
(sin x / cos x)² + 1 = (1 / cos x)²
Step 3 - Use the definition of the two trigonometric functions:
tan² x + 1 = sec² x
To learn more on trigonometric functions: brainly.com/question/14746686
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The answer to your question would be -8
<span>3x - 9 = 12
3x = 12 + 9
3x = 21
x =21/3
x =7
hope that helps</span>
