Respuesta :

mathmate
Using the identity sin^2(t)+cos^2(t)=1
and 
given sin(t)=0.3,
we can find cos(t) by substituting
sin^2(t)+cos^2(t)=1
0.3^2+cos^2(t) = 1
cos^2(t)=1-0.3^2=1-0.09=0.91
cos(t)=sqrt(0.91)= 0.954  ≠  0.6
So the given proposition is false.
shubhamchouhanvrVT

The given statement is false that if sin t=.3 then cos t=-.6.

What is trigonometry?

Trigonometry is the branch of mathematics that set up a relationship between the sides and angle of the right-angle triangles.

Using the identity sin²(t)+cos²(t)=1 and given that sin(t)=0.3,

Calculate the cos(t) by substituting sin(t)=0.3,

sin²(t)+cos²(t)=1

0.3²+cos²(t) = 1

cos²(t)=1-0.3²=1-0.09=0.91

cos(t)=s√0.91)= 0.954  

Hence, the statement is false.

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