cos2α + cot2α + sin2α = A.  \(\large\boldsymbol{\frac {1} {\sin^2\alpha} }\)
B.  \(\large\boldsymbol{\frac {1} {\cos^2\alpha} }\)
C.  \(\large\boldsymbol{\frac {1} {\tan^2\alpha} }\)
D.  \(\large\boldsymbol{\frac {1} {\cot^2\alpha} }\)
E.  \(\boldsymbol{2\cos^2\alpha }\)
A    B    C    D    E 

[ 4-3322 - op net sinds 11.5.14-(E)-30.10.2023 ]

Translation in   E N G L I S H

See above

Oplossing - Solution

Gebruik twee basisformules van de goniometrie
gricha