A right triangle has legs with the lengths of 2 and 5, find the length of the hypotenuse

Answer Choices:
√21

√3

√7

√29

Step-by-step explanation:

we know that

In a right triangle

Applying the Pythagorean Theorem

where

c is the hypotenuse (the greater side)

a and b are the legs (perpendicular sides)

In this problem we have

substitute

step-by-step explanation:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92