Math, asked by rawatmanju948, 1 year ago

Find the value of [cot(20-theta)+tan(70+they)/sin(70+they)]×sin(20-theta)

Answers

Answered by paris31812

0

Answer:

Let cos(20-tetha) remain same..

Let us change Sin(70-tetha)

As we know that...

Sin(90-tetha)=Cos tetha

Sin(70-tetha)=Cos[90-(70+tetha)]

=Cos(20+tetha)

Cos(20-tetha) - Cos(20-tetha) = 0

Hence proved...

Step-by-step explanation:

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