Maths X Quiz - Chapter 8 introduction to trigonometry

1. Square for example of x is written as x^2, similarly cube etc

2. Write more than one answers with "," in between but do not leave any space anywhere

3. Refresh/Reload the page if the test is not responding

4. Always write numbers in figures example 39

5. If the answer contains units write as cm, m, m^2, mm^3 etc.

6. Write answers in assending order unless any other order is required

7. If one answer has two words do not leave any space between them [eg. write right tringle as righttringle]


1. If sin 3A = cos (A - 22) where A is an acute angle. Find A.



2. Express sec880 + cosec770 in terms of trignometric ratios of angles
between 00 and 450 [ do not write degree in answer]



3. Evaluate (2cos2300 +3sec2600 - cot2450)/(cos2300 +sin2300)



4. cosine was called ________ by Aryabhatta



5. (1+tanA+secA)(1+cotA-cosecA)
[ Choose one or more]

3
-2
-3
2



6. In triangle PQR right angled at Q, PR + QR = 50cm and PQ = 40cm. Find the value of tan P.



7. If tan A + 1/tan A = 3 Find value of tan2 + 1/tan2 .



8. An identity is an _________
[ Choose one or more]

equation
equation which is always true
formula
theorem


9. cos A/(1 - sinA) + cotA/(1+sinA) =

[ Choose one or more]

cot A + secA
tan A + secA
tanA + secA cosecA
(sin2A + 1)/sinAcosA


10. Write maximum value of 1/secA