Math, asked by ns056030335, 6 months ago

sin 20 degree .cos 70 degree +cos 20 degree. sin 70 degree please tell me this question

Answers

Answered by mukul1434

0

Answer:

sin.(a+b)= sina.cosb + cosa.sinb

sin(20+70)=sin90 =1

do you like it?

Answered by mahira7964

1

Step-by-step explanation:

We know that

: Sin(90-20)-Sin(90-70)/

sin70-sin20

= Sin70-Sin20/

Sin70-Sin20

= 1 (Ans)

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