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MBD-INTRODUCTION TO TRIGONOMETRY-EXERCISE
- If 3cos theta-4sintheta=2costheta+sintheta find tantheta .
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- If sintheta=3/5, evaluate [(costheta-(1/tantheta))/(2cottheta)] .
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- What is the value of sina . .
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- If A=30^@ verify that :- cos2A= (1-tan^2A)/(1+tan^2A) .
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- If A=30^@ verify that :- cos2A= cos^2A-sin^2A .
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- If A=30^@ verify that :- cos2A=1-2sin^2A .
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- If A=30^@ verify that :- cos2A= 2cos^2A-1 .
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- If A=30^@ verify that :- sin3A=3sinA-4sin^3 A .
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- If A=30^@ verify that :- cos3A=4cos^3 A-3cosA .
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- If A=30^@ verify that :- tanA= sqrt((1-cos^2A)/cos^2A .
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- If A=30^@ verify that :- sinA=tanA/ sqrt(1+tan^2A) .
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- Evaluate :- 2sin^2 60^@+cot^2 30^@-tan 45^@ .
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- Evaluate :- (5sin^2 30^@+cos^2 45^@+4tan^2 45^@)/(2sin30^@ cos60^@+tan...
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- Evaluate :- tan60^@/(sec60^@+cosec60^@) .
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- Evaluate :- sin^2 30^@ cos^2 45^@+4tan^2 30^@+1/2sin^2 90^@+1/8cot^2 9...
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- If sin (A + B) = 1 and cos (A -B) = sqrt3/2 .Find A and B.
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- If sin (A-B)=1/2 , cos(A+B)=1/2 . Find A and B.
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- If cos (A+B)=0 and sin(A-B) = 1/2 . Find A and B .
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- If 3tan2theta=sqrt3 find theta .
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- Find x , if 2cosec^2 30^@+xsin^2 60^@-3/4 tan^2 30^@ = 10 .
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