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The value of cot70^0+4cos70^0 is (a)1/...

The value of `cot70^0+4cos70^0` is (a)`1/(sqrt(3))` (b) `sqrt(3)` (c) `2sqrt(3)` (d) `1/2`

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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
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  2. For n in Z , the general solution of (sqrt(3)-1)sintheta+(sqrt(3)+1)c...

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  3. The value of cot70^0+4cos70^0 is (a)1/(sqrt(3)) (b) sqrt(3) (c) ...

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  5. If cosectheta-sintheta=m a n d sectheta-costheta=n ,"eliminate"theta

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  6. The solution of 4sin^2x+tan^2x+cos e c^2x+cot^2x-6=0i s(n in Z) (a) ...

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  7. The value of sinpi/(14)sin(3pi)/(14)sin(5pi)/(14)sin(7pi)/(14)sin(9pi)...

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  8. If 3sintheta+5costheta=5, then show that 5sintheta-3costheta=+-3.

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  9. In A B C , if (sinA)/(csinB)+(sinB)/c+(sinC)/b=c/(a b)+b/(a c)+a/(b c...

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  10. The set of values of x satisfying the equation sin3alpha=4sinalphasin(...

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  11. cos e c(360^0)/7+cos e c(540^0)/7= (a) cosec(180^0)/7 ,(b) cosec(...

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  12. If (secA+tanA)(secB+tanB)(secC+tanC)=(secA-tanA)(secB-tanB)(secC-tanC)...

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  13. In a triangle A B C , the altitude from A is not less than B C andthe ...

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  14. If (3-tan^2(pi/7))/(1-tan^2(pi/7))=kcos(pi/7) then the value of k is...

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  15. If tan(A-B)=1a n dsec(A+B)=2/(sqrt(3)) , then the smallest positive va...

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  16. Prove that sqrt((1+sintheta)/(1-sintheta))=sectheta+tantheta

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  17. If in A B C ,A C is double of A B , then the value of cot(A/2)cot((...

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  18. If 3tan(theta-15^0)=tan(theta+15^0), then theta is equal to n in Z) ...

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  19. Let P(x)=((1-cos2x+sin2x)/(1+cos2x+sin2x))^2+((1+cotx+cot^2x)/(1+tanx+...

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  20. prove that 1/(secA-tanA)-1/(cosA)=1/(cosA)-1/(secA+tanA)

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