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Champ Jee
Subject: Maths
, asked on 23/3/18
Q19.
Answer key shows: height of tower = 118.25 m
But my answer comes out to be 118.49 m.
Will my marks be deducted in boards if my answer is just 0.24 m wrong?
19. The angle of depression of the top and bottom of a 50 m high building from the top of a tower are 45
^{o}
and 60
^{o}
respectively. Find the height of the tower and the horizontal distance between the tower and the building. (Use
$\sqrt{3}$
=1.73
Answer
6
Taniqsha
Subject: Maths
, asked on 17/3/18
Question no 10
$\mathbf{10}\mathbf{.}\mathbf{}If\mathrm{cos}\theta =\frac{1}{2},find\frac{se{c}^{2}\theta +{\mathrm{tan}}^{2}\theta}{7-2sec\theta \xb7\mathrm{cos}ec\theta}$
Answer
2
Taniqsha
Subject: Maths
, asked on 17/3/18
Q. Evaluate :
$\frac{7{\mathrm{sin}}^{2}30\xb0+3\mathrm{cos}e{c}^{2}60\xb0-co{t}^{2}45\xb0}{{\mathrm{sin}}^{2}70\xb0+{\mathrm{sin}}^{2}20\xb0}+2{\mathrm{sin}}^{2}30\xb0-2{\mathrm{cos}}^{2}30\xb0$
Answer
2
Son Ser
Subject: Maths
, asked on 5/3/18
The ans should be 22.5. Plzz fast i have exams tomorrow. Dont provide any link plzzz
Find the value of _______
Sin
^{2}
1
^{o}
+ Sin
^{2}
3
^{o}
+ Sin
^{2}
5
^{o}
+ .......... Sin
^{2}
87
^{o}
+ Sin
^{2}
89
^{o}
Use the formula an = a+ (n-1)d to solve the given question and also use trigonometric identities
Answer
4
Son Ser
Subject: Maths
, asked on 2/3/18
Question) Find the value of .
$Si{n}^{2}1\xb0+Si{n}^{2}3\xb0+Si{n}^{2}5\xb0+...Si{n}^{2}87\xb0+Si{n}^{2}89\xb0.\phantom{\rule{0ex}{0ex}}Usetheformula{a}_{n}=a+(n-1)dtosolvethegivenquestionandalsousethetrignomatricidentities.$
Answer
1
Son Ser
Subject: Maths
, asked on 2/3/18
$Findthevalueof......\phantom{\rule{0ex}{0ex}}{\mathrm{sin}}^{2}{1}^{0}+{\mathrm{sin}}^{2}{3}^{0}+{\mathrm{sin}}^{2}{5}^{0}..........{\mathrm{sin}}^{2}{87}^{0}+{\mathrm{sin}}^{2}{89}^{0}.\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}Usethefarmula{a}_{n=a+(n-1)dtosolvethegivenqwestionandalsotrognometricidenties}$
Answer
1
Son Ser
Subject: Maths
, asked on 1/3/18
Plzz fast i have exams 2moro
Answer
1
Amit Rana
Subject: Maths
, asked on 27/2/18
Please solve this question
20.
A moving boat is observed from the top of a 150 m high cliff moving away from the cliff. The angle of depression of the boat changes from
$60\xb0to45\xb0in2minutes.$
Find the speed of the boat in m/h .
Answer
1
Amit Rana
Subject: Maths
, asked on 22/2/18
Plzz tell question no 20
Answer
2
Sneha Jain
Subject: Maths
, asked on 22/2/18
26. A moving boat is observed from the top of a 150 m high cliff moving away from the cliff. The angle of depression of the boat changes from 60
^{o}
to 45
^{o}
in 2 minutes. Find the speed of the boat in m/h.
Answer
1
Sanjana Sachin
Subject: Maths
, asked on 21/2/18
From the top of 100 m high, the angles of depression of the top and the bottom of a tower are observed to be 45 and 60 degree respectively. Find the height of the tower. Also find the distance between the foot of the building and the bottom of the tower.
And plzz do not send the any link give solution
Answer
5
Abiali Mister
Subject: Maths
, asked on 19/2/18
Please help me with these questions....
Answer
1
Shiethal Xi
Subject: Maths
, asked on 19/2/18
how to solve trignometry equation properly?
Answer
2
Champ Jee
Subject: Maths
, asked on 18/2/18
Q25. Please
Q25)
The angle of elevations of top of the first building from the top and bottom of the second building are 30
$\xb0$
and 45
$\xb0$
respectively. Find the ratio of the height of second building to that of the first building.
Answer
2
Sanjana Sachin
Subject: Maths
, asked on 18/2/18
the angle of elevation of an aeroplane from a point A on the ground is 60degree. After a flight of 30 second, the angle of elevation changes to 30 degree. If the plane is flying at the height of 3600 root 3 m , find the speed of plane
Answer
1
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What are you looking for?

Answer key shows: height of tower = 118.25 m

But my answer comes out to be 118.49 m.

Will my marks be deducted in boards if my answer is just 0.24 m wrong?

19. The angle of depression of the top and bottom of a 50 m high building from the top of a tower are 45

^{o}and 60^{o}respectively. Find the height of the tower and the horizontal distance between the tower and the building. (Use $\sqrt{3}$=1.73$\mathbf{10}\mathbf{.}\mathbf{}If\mathrm{cos}\theta =\frac{1}{2},find\frac{se{c}^{2}\theta +{\mathrm{tan}}^{2}\theta}{7-2sec\theta \xb7\mathrm{cos}ec\theta}$

Find the value of _______

Sin

^{2}1^{o}+ Sin^{2}3^{o}+ Sin^{2}5^{o}+ .......... Sin^{2}87^{o}+ Sin^{2}89^{o}Use the formula an = a+ (n-1)d to solve the given question and also use trigonometric identities

$Si{n}^{2}1\xb0+Si{n}^{2}3\xb0+Si{n}^{2}5\xb0+...Si{n}^{2}87\xb0+Si{n}^{2}89\xb0.\phantom{\rule{0ex}{0ex}}Usetheformula{a}_{n}=a+(n-1)dtosolvethegivenquestionandalsousethetrignomatricidentities.$

20.A moving boat is observed from the top of a 150 m high cliff moving away from the cliff. The angle of depression of the boat changes from $60\xb0to45\xb0in2minutes.$ Find the speed of the boat in m/h .^{o}to 45^{o} in 2 minutes. Find the speed of the boat in m/h.And plzz do not send the any link give solution

Q25)The angle of elevations of top of the first building from the top and bottom of the second building are 30$\xb0$ and 45$\xb0$ respectively. Find the ratio of the height of second building to that of the first building.