Trigonometric Ratios of Standard Angles
Trending Questions
Q. Find the value of 8 sin2x cos 4x sin 6x, when x = 15°.
- 0
- 2
- 8
- 16
Q. acosA + bcosB + ccosC = 2asinBsinC
prove that lhs = rhs
prove that lhs = rhs
Q.
14 sin 30∘+6 cos 60∘−5 tan 45∘= _____
6
5
1
0
Q. Which of the following statements is/are true for θ ranging from 0∘ to 90∘?
- cosθ, cotθ and cosecθ increases as θ increases.
- sinθ, tanθ and secθ increases as θ increases.
- Trigonometric ratios values do not follow any pattern.
- sinθ=cosθ for all the values of θ
Q.
If A is an acute angle and sin A = 0.5, then the value of A =
30 degrees
45 degrees
60 degrees
90 degrees
Q.
If sinA=12 and cosB=1√2,
then find the value of (A+B).
30∘
45∘
75∘
15∘
Q. When θ=45∘, sinθ+cosθ= .
- 1√2
- √2
- 1√3
- √3