11th Class Math MCQS
Cos315° =
1/?2
?3/2
1/2
1
Sec? ?
?cosec2? – 1
cosec?/?cosec2?-1
? 1+cot2?/cot?
1/? 1 – sin2?
If Cos? = 3/5,0 < ? < ?/2 then tan2? =
24-/7
7/25
24/29
7/-24
tan15° =
?3+1/?3-1
?3 +1
?3 -1
?3-1/?3+1
cos(a-ß) =
cosa cosß + sina sinß
cos a sin ß – Sin a Cos ß
cos a sin ß + sin a Cos ß
cosa cosß – sina sinß
The distance between the points (3,8) and (5,6) is
1
2?2
3?2
?2
sec (3?/2 +a) =
csc ?
– csc ?
sec ?
– cot ?
Cos ? =
±?1+cos?/2/2
±?1-cos?/2 /2
±?1+Cos2?/2
±?1-Cos2?/2
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