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Q12 of 27 Page 1

s

sin 30° + cos B = 1


1/2 + cos B = 1


cos B = 1/2


B = 60°


More from this chapter

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10

In the ΔABC, D and E are points on side AB and AC respectively such that DE BC. If AE=2cm, AD=3cm and BD=4.5cm, then find CE.

11

In the figure, if B1, B2, B3,…... and A1,A2, A3,….. have been marked at equal distances. In what ratio C divides AB?


13

If x = 2sin2Ɵ and y = 2cos2Ɵ + 1, then find x + y.

14

In a circle of diameter 42cm, if an arc subtends an angle of 60° at the centre where π=22/7, then what will be the length of arc.

Questions · 27
Set-I
3 4 5 6 8 10 11 12 13 14 15 16 17 19 21 22 24 25 27 28 29 30 31 32 33 34 36
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