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LenaWriter [7]
3 years ago
9

In a right triangle, sin (40 – x)° = cos (3x).What is the value of x?

Mathematics
1 answer:
AlladinOne [14]3 years ago
6 0

Answer:

<em>Value of x = 25</em>

Step-by-Step Explanation:

~ Knowing that, in a right triangle ~

sin(40-x)=cos(3x) ⇒

sin(40-x)=sin(90-3x) ⇒

40 - x = 90 - 3x ⇒

40 - x  +3x=90 - 3x  +3x =>

40+2x=90 =>

2x=50 =>

x = 25

<em>Now it is proven to be that,</em>

<em>x = 25</em>

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