Q. 1 A4.4( 28 Votes )
Evaluate the following.
A. sin 45° + cos 45°
Answer :
By trigonometric identities, we can say
sin 45° = 1/√2
and cos 45° = 1/√2
Adding them, we get
sin 45° + cos 45° = 1/√2 + 1/√2
⇒ sin 45° + cos 45° = 2/√2 = √2
Thus, sin 45° + cos 45° = √2.
Rate this question :
How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Trick to learn all Trigonometric Formulae28 mins
Champ Quiz | Trigger on Trigonometry47 mins
Champ Quiz | Trigonometry Important Questions33 mins
NCERT | Trigonometric Identities52 mins
Champ Quiz | NTSE Trigonometry50 mins
Testing the T- Ratios of Specified Angles57 mins
Foundation | Cracking Previous Year IMO QuestionsFREE Class
Quiz | Imp. Qs. on Trigonometry41 mins
Basic Concept of Trigonometry43 mins
NCERT | Imp. Qs. on Trigonometry42 mins
Trick to learn all Trigonometric Formulae28 minsChamp Quiz | Trigger on Trigonometry47 minsChamp Quiz | Trigonometry Important Questions33 minsNCERT | Trigonometric Identities52 minsChamp Quiz | NTSE Trigonometry50 minsTesting the T- Ratios of Specified Angles57 minsFoundation | Cracking Previous Year IMO QuestionsFREE ClassQuiz | Imp. Qs. on Trigonometry41 minsBasic Concept of Trigonometry43 minsNCERT | Imp. Qs. on Trigonometry42 minsTry our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
view all courses
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
RELATED QUESTIONS :
Evaluate the following.
A. sin 45° + cos 45°
AP- MathematicsEvaluate the following.
B. 
Evaluate the following.
C. 
In a right angle triangle ABC, right angle is at B, if 
then find the value of
A. sin A cosC + cos A sin C
AP- MathematicsGiven 
then evaluate
A. 
Choose the right option and justify your choice -
C) 
A. cos 60°
B. sin 60°
C. tan 60°
D. sin 30°
AP- Mathematics
If 
then find sin A and tan A
