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Question 1
For what value of 
, is (sin
+ cosec 
) = 2.5 where 0 <
90
?
, is (sin + cosec ) = 2.5 where 0 < 90? Question 2
If cos 
= 4/5 and 0<
<90
, then the value of 
is:
= 4/5 and 0<<90, then the value of is: Question 3
The value of (1 + tan2θ) (1 – Sin2θ) is
Question 4
Consider the following statements:
1) There is only value of x in the first quadrant that satisfies sinx + cosx = 2.
2) There is only one value of x in the first quadrant that satisfies sinx–cosx = 0
Which of the above is/are correct?
1) There is only value of x in the first quadrant that satisfies sinx + cosx = 2.
2) There is only one value of x in the first quadrant that satisfies sinx–cosx = 0
Which of the above is/are correct?
Question 5
Find the value of:
Question 6
The length of the shadow of a person s cm tall when the angle of elevation of the sun is 
is p cm. It is q cm when the angle of elevation of the sun is 
. Which one of the following is correct when 
= 3
?
is p cm. It is q cm when the angle of elevation of the sun is . Which one of the following is correct when = 3 ? Question 7
If sec x = 13/12, Find the value of : cosec2x (1-tanx)(1+tanx) cos2x
Question 8
The angle of elevation of the tip of a tower from a point on the ground is 450 moving 21 m directly towards the base of the tower the angle of elevation changes to 600.what is the height of the tower to the nearest meter?
Question 9
If 
, then the value of 
is equal to
, then the value of is equal to Question 10
If sin 7x = cos 11x, then the value of tan 9x + cot 9x is
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Oct 27CDS & Defence
