2sinA into cosA = cosA than what is the value of A??
alok1926:
ooo if 30 degree is correct answer
2SinA =1 (SinA = 1/2) will make equation true or cosA = 0 will also make it true
Answers
Answered by
3
Answer: 30°
Step-by-step explanation:
2×sin30°×cos30°=cos30°
2×1/2×√3/2=√3/2
√3/2=√3/2
Hence proved
please solve this question X+y/3a-b = y+z/3b-c = z+x/3c-a
Then show that x+y+z/a+b+c
= ax+by+cz/a^2+b^2+c^2
Then show that x+y+z/a+b+c
= ax+by+cz/a^2+b^2+c^2
sorry that was wrong
X+y/3a-b = y+z/3b-c = z+x/3c-a
Then show that x+y+z/a+b+c
= ax+by+cz/a^2+b^2+c^2
Then show that x+y+z/a+b+c
= ax+by+cz/a^2+b^2+c^2
Answered by
1
Answer:
A= 90 or 30 deg
Step-by-step explanation:
2SinACosA = CosA
2sinAcosA - cosA = 0
CosA(2SinA-1) = 0
CosA = 0 means A = 90 deg
2SinA - 1 = 0 menas SinA = 1/2 => A = 30 deg
Please mark the answer as "The Brainliest answer" if it helps
Thanks for brainliest
ok
Similar questions
Accountancy,
6 months ago
Physics,
11 months ago
Science,
11 months ago
Chemistry,
1 year ago
Hindi,
1 year ago