Advertisements
Advertisements
प्रश्न
If cot θ = `7/8`, evaluate cot2 θ.
Advertisements
उत्तर
`Cot^2 theta = (7/8)^2`
= `49/64`
संबंधित प्रश्न
In ΔABC, right angled at B. If tan A = `1/sqrt3` , find the value of
- sin A cos C + cos A sin C
- cos A cos C − sin A sin C
In ΔPQR, right angled at Q, PR + QR = 25 cm and PQ = 5 cm. Determine the values of sin P, cos P and tan P.
State whether the following are true or false. Justify your answer.
cot A is the product of cot and A.
State whether the following are true or false. Justify your answer.
sin θ = `4/3`, for some angle θ.
In the following, one of the six trigonometric ratios is given. Find the values of the other trigonometric ratios.
`cot theta = 12/5`
If 3 tan θ = 4, find the value of `(4cos theta - sin theta)/(2cos theta + sin theta)`
If Cosec A = 2 find `1/(tan A) + (sin A)/(1 + cos A)`
Evaluate the following
sin2 30° + sin2 45° + sin2 60° + sin2 90°
Evaluate the following
cos2 30° + cos2 45° + cos2 60° + cos2 90°
Evaluate the Following
`4/(cot^2 30^@) + 1/(sin^2 60^@) - cos^2 45^@`
Find the value of x in the following :
`2sin 3x = sqrt3`
Find the value of x in the following :
`2 sin x/2 = 1`
sin (45° + θ) – cos (45° – θ) is equal to ______.
`sqrt(3)` cos2A + `sqrt(3)` sin2A is equal to ______.
Prove that `tan θ/(1 - cot θ) + cot θ/(1 - tanθ)` = 1 + sec θ cosec θ
If sin θ + cos θ = `sqrt(2)` then tan θ + cot θ = ______.
If cos(α + β) = `(3/5)`, sin(α – β) = `5/13` and 0 < α, β < `π/4`, then tan (2α) is equal to ______.
Let tan9° = `(1 - sqrt((sqrt(5)k)/m))k` where k = `sqrt(5) + 1` then m is equal to ______.
In a right triangle PQR, right angled at Q. If tan P = `sqrt(3)`, then evaluate 2 sin P cos P.

