Math, asked by shannoncoutinho, 4 months ago

2Sin2A=root3. And A is acute find Cos 3A

Answers

Answered by srisatya26

3

Step-by-step explanation:

2sin2A= roor3

sin2A=root3/2

sin2A=sin60

2A=60

A=30

cos3A=cos3×30=cos90

=0

please mark as brainliest

Previous Question

Next Question

Similar questions

English, 2 months ago

Vansh said " my friends were watching a movie " in indirect speech...

Math, 2 months ago

4. Check whether the given fractions are equivalent : 45 18 (b) 62 65 26 5 10 a а 9...

English, 2 months ago

The cells capable of changing shapes are (a) Amoeba cell (b) WBC (c) Both of these (d) None of these.

English, 4 months ago

Mary went to her room .( Change the sentence into continuous present tense)...

Math, 4 months ago

An alloy of copper and nickel contains 65 % copper. A second alloy contains copper and nickel in the ratio 17 : 3. In what ratio should the two alloys be mixed so that the new mixture contains 4 times as much copper as nickel?

Social Sciences, 10 months ago

write any two names of pulses and fibre crops...

Geography, 10 months ago

If we were planet earth what will we say to humans?

Biology, 10 months ago

transcription and translocation process...