Find the 8th term of the A.P -3, -1, 1 ......
13
11
-8
-11
-17
Correct answer is B
Un = a + (n-1)d
= -3 + (8 - 1)2
= 11
Express the product of 0.06 and 0.09 in standard form
5.4 * 10-1
5.4*10-2
5.4*10-3
5.4*102
5.4*103
Correct answer is C
0.06 x 0.09 = 0.0054
= 5.4 x 10-3
1
2.02
20.02
202
2020
Correct answer is D
(101.5)2 - (100.5)2;(101.5 + 100.5)
202 x 1
= 202
If sinθ = K find tanθ, 0° ≤ θ ≤ 90°.
1-K
kk−1
k√1−k2
k1−k
k√k2−1
Correct answer is C
sinθ=k1
⟹12=k2+adj2
adj=√1−k2
∴