Evaluate this trigonomater please solve this class 10
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The answer is in the attachment...
Hope this helps u
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Answer:
cos70/sin20 + cos55.cosec35/(tan5.tan25.tan45.tan65.tan85) + (cos²20+cos²70)/(cos²59 + cos²31)
by using complementary angles properties of trigonometry
above question is equal to
= sin20/sin20 + cos55.cosec35/(cot85.cot65.tan45.tan65.tan85) + (sin²70 + cos²70)/(sin²31 + cos²31)
= 1 + sin35.(cosec35)/tan45 + 1/1
= 1 + 1 + 1
= 3
thus answer is 3
hope this will help you
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