Question

10. If cos⁡t=3/4 and sin⁡t<0, then sin⁡(3t)= ? 

√7/16

-(5√7)/16

-(3√7)/4

(5√7)/16

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Answer 1

Answer:

Option B is the answer.i.e.(-5√7)/16

Step-by-step explanation:

Used formulae:-

• Sin^2A+Cos^2A=1
• Sin3A=3SinA-4Sin^3 A

Answer 2

Answer:

option B is the answer for your question