Maths / Introduction to Trigonometry / Trigonometric Identities

QUESTION
 

large sin(45^o+Theta )-cos(45^o-Theta )  is equal to

OPTIONS
A. 

large 2: : cos: : Theta

B. 

0

C. 

large 2: : sin: : Theta

D. 

1

Right Option : B

EXPLANATION
Explain TypeExplanation Content
Text

sin(45+Theta )-cos(45-Theta )= sin(45+Theta )-sin[90-(45-Theta )]= sin(45+Theta )-sin[90-45+Theta]=sin(45+Theta)-sin(45+Theta)=0

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