SIN = COS

Geometry Level 1

Given 0 ∘ < x < 9 0 ∘ 0^\circ < x < 90^\circ , and sin ⁡ ( x ) = cos ⁡ ( x ) \sin (x) = \cos (x) , evaluate x x in degrees.

Picture Source File: Wikimedia Trigonometry


The answer is 45.

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Math Man by math man , 20, Indonesia

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1 solution

Nelson Mandela
Mar 3, 2015

sinx=cosx.

sinx=sin(90-x).

x=90-x.

2x=90.

x=45 degrees.

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basics were needed in this question...that i dont have

nikhil patil - 6 years, 1 month ago

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