Grade 11Trigonometry
Sin theta = 4/5 then find the value of cosec theta /1+cot theta
4 Answers
Arun
Dear student
sin theta = 4 / 5
hence
cosec theta = 5/4
&
cot theta = ¾
now
cosec theta / (1+ cot theta))
= (5/4) / (1+3/4)
= (5/4) / (7/4)
= 5/7
Regards
Arun (askIITians forum expert)
Shraddha
Sorry sir I have a doubt regarding this when I solved I got the same answer as yours but in my book 20/21 is the answer given
Aarushi Ahlawat
There are two possible answers for the given questions but none of those is 20/21.
One is 5/7 and other one 5.
For sin(theta)=4/5
cot(theta)= either 3/4 or -3/4 .
So possible answers are 5/7 and 5.
Aarushi Ahlawat
20/21 is one of the answer for sec(theta)/(1+cot(theta) other possible answer for this is -20/3. There may be typo mistake either in question or answer.
Other Related Questions on trigonometry
In ABC, if cot A+cot B+cot C = cosecA cosecB cosecC, then prove that ABC is right angle triangle.
In ABC, if cot A+cot B+cot C = cosecA cosecB cosecC, then prove that ABC is right angle triangle.
trigonometry
Last Activity: 3 Years ago
- Find the general solution of equation tan3∂=cot2∂
For all angles between -720 and +720
- Find the general solution of equation tan3∂=cot2∂
For all angles between -720 and +720
trigonometry
Last Activity: 4 Years ago
Derive a formula for the area of the triangle, given b, A, B, and C. That is, derive the formula: (b^2sinAsinC)/(2sinB)
Derive a formula for the area of the triangle, given b, A, B, and C. That is, derive the formula: (b^2sinAsinC)/(2sinB)
trigonometry
Last Activity: 4 Years ago
WHAT IS THE LIMIT WHEN X TOWARDS TO 0 OF sin6x/5x ? lim𝑥→0 𝑠𝑖𝑛6𝑥/5𝑥
WHAT IS THE LIMIT WHEN X TOWARDS TO 0 OF sin6x/5x ? lim𝑥→0 𝑠𝑖𝑛6𝑥/5𝑥
trigonometry
Last Activity: 4 Years ago