Question

A right triangle has leg lengths 0.3 centimeters and 0.4 centimeters. What is
cosθ where θ is the smallest angle of the triangle?

Answer 1

Cos theta equals adjacent side divided by hypotenuse

Answer 2

So,
\[\cos ^{-1}(\frac{ 0.3 }{ 0.4 })\] ?

Answer 3

You need to first calculate hypotenuse using pythagorean theorem

Answer 4

a^2+b^2=c^2
0.3^2+0.4^=c^2
sqrt 0.25
0.5

Answer 5

@AravindG

Answer 6

Good.

Answer 7

Now for smallest angle adjacent side will be smallest of .4 and
.3 and u gt the hypotenuse. cant u find cos theta now?

Answer 8

0.7227342478

Answer 9

Good.