please tell answer of this question..
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0
Answer:
cos(70-theta) can ve written as sin(90-70-theta)
i.e., sin(20-theta)
now substituting it in the question
sin(20-theta)-sin(20-theta)=0
Hope it helped
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Answered by
4
Answer:
Hey Army!
Hope this helps you :D
Step-by-step explanation:
GIVEN:
= cos (70°+θ) — sin (20° — θ)
= cos (70°+θ) — sin [90°-(70° + θ)]
= cos (70°+θ) — cos (70° + θ)
= 0
Hence the final answer is 0
SARANGHAEYO! <3
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