\[{\cos h}2 + {\sin h}2 =] | MATH - BASIC HYPERBOLIC FUNCTION, DOMAIN & RANGE | SolveeIt | Solveeit

Today, August 18

Question

${\cos h}2 + {\sin h}2 =$

A

$\frac{1}{e}$

B

$e$

C

$\frac{1}{e^{2}}$

D

$e^{2}$

Answer

$e^{2}$

Explanation

Solution

${\cos h}2 + {\sin h}2 = \frac{e^{2} + e^{- 2}}{2} + \frac{e^{2} - e^{- 2}}{2} = e^{2}.$