banbhumika613 banbhumika613

21-09-2021
Mathematics

contestada

(sin thetha - cos thetha) whole square = 1-2sin thetha • cos thetha

Respuesta :

jimrgrant1 jimrgrant1

21-09-2021

Answer:

see explanation

Step-by-step explanation:

Using the identity

sin²x + cos²x = 1

Consider the left side

(sinθ - cosθ)² ← expand using FOIL

= sin²θ - 2sinθcosθ + cos²θ

= 1 - 2sinθcosθ

= right side , thus verified

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