mohdhasnain535 mohdhasnain535

09-11-2020
Mathematics

contestada

what is the value of cos2 31 degrees-sin2 59 degrees

Respuesta :

varshney2102 varshney2102

09-11-2020

Answer:

hope this will help you..

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jimrgrant1 jimrgrant1

09-11-2020

Answer:

0

Step-by-step explanation:

Using the cofunction identity

sin x = cos(90 - x), then

cos²31° - sin²59°

= sin²(90 - 31)° - sin²59°

= sin²59° - sin²59°

= 0

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