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CBSE Class 10 Answered

if θ is an acute angle and tan θ + cot θ = 2, then the value of sin³θ + cos³θ is
Asked by ab8657430691 | 06 Dec, 2021, 06:56: PM
answered-by-expert Expert Answer
tan space straight theta space plus space cot space straight theta space equals space 2 tan space straight theta space plus space fraction numerator 1 over denominator tan space straight theta end fraction space equals space 2 tan squared space straight theta minus 2 tan space straight theta plus 1 equals 0 open parentheses tan space straight theta minus 1 close parentheses squared equals 0 tan space straight theta equals 1 straight theta space equals space 45 so comma sin space straight theta space equals space fraction numerator 1 over denominator square root of 2 end fraction cos space straight theta space equals space fraction numerator 1 over denominator square root of 2 end fraction sin ³ straight theta space plus space cos ³ straight theta space equals space fraction numerator 1 over denominator 2 square root of 2 end fraction plus fraction numerator 1 over denominator 2 square root of 2 end fraction equals fraction numerator 1 over denominator square root of 2 end fraction
Answered by Arun | 07 Dec, 2021, 09:38: AM

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CBSE 10 - Maths
(SinA/1+CosA + 1+cosA/sinA) (sinA/1-cosA - 1-cosA/sinA)=4cosecAcotA    
Asked by prasadshruti9999 | 03 Jun, 2023, 10:05: AM
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CBSE 10 - Maths
cot2 30-2cos2 60-3/4sec2 45-4sec2 30
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Asked by Akhandp457 | 29 May, 2023, 09:06: PM
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CBSE 10 - Maths
find the zeroes of the quadratic polynomial and verify the relationship between the zeroes and the coffiecient 4u+8u
Asked by dimpaldihingia2 | 24 May, 2023, 06:10: PM
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CBSE 10 - Maths
if sin theta = root3/2, find the value of all t- ratios
Asked by akhilthainuan | 22 May, 2023, 02:11: PM
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CBSE 10 - Maths
If α and β are tge zeros of the polynomial x^2 - 6x + k and 3α + 2β=20 , then the value of k is
Asked by ruchipandey20071978 | 21 May, 2023, 10:00: PM
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CBSE 10 - Maths
If one of the zeros of the quadratic polynomial (k - 1)x^2 + kx + 1 is -3, then the value of k
Asked by ruchipandey20071978 | 21 May, 2023, 09:57: PM
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CBSE 10 - Maths
If the sum of the zeors of the polynomial f (x)=2x^3 - 3kx^2 +4x - 5 is 6 , then the value of k is
Asked by ruchipandey20071978 | 21 May, 2023, 05:32: PM
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CBSE 10 - Maths
If two zeros of x^3 + x^2 - 5x - 5 are √5 and - √5, then its third zero is
Asked by ruchipandey20071978 | 21 May, 2023, 05:29: PM
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CBSE 10 - Maths
The value of k for which the system of equestions kx-y=2 and 6x-2y=3 has a uniqe solution is..
Asked by ruchipandey20071978 | 11 May, 2023, 06:55: AM
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CBSE 10 - Maths
a regular polygon has 20 sides. how many triangles can be drawn by using the vertices but not using the sides?
Asked by gavhanenisha0310 | 09 May, 2023, 04:10: PM
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