sin2α + cos2α + tan2α

is gelijk aan
A.  \(\boldsymbol{\cot^2 \alpha}\)
B.  \(\large\boldsymbol{\frac 1{\sin^2 \alpha} }\)
C.  \(\large\boldsymbol{\frac 1{\cos^2 \alpha} }\)
D.  \(\large\boldsymbol{\frac 1{\tan^2 \alpha} }\)
E.  \(\large\boldsymbol{\frac 1{\cot^2 \alpha} }\)
A    B    C    D    E

[ 4-2161 - op net sinds 18.10.13-(E)-30.10.2023 ]

Translation in   E N G L I S H

sin2α + cos2α + tan2α     is equal to
See above

Oplossing - Solution

Gebruik twee basisformules van de goniometrie.
gricha