ICSE Class 9 Answered
Asked by Barnalidipaksagnik | 11 Feb, 2018, 09:44: AM
![begin mathsize 16px style secA equals square root of 2 space rightwards double arrow straight A equals 45 degree
Hence comma space sin 45 degree equals fraction numerator 1 over denominator square root of 2 end fraction space and space cos 45 degree equals fraction numerator 1 over denominator square root of 2 end fraction
also space tan 45 degree equals 1
Put space it space in space fraction numerator 3 cos squared straight A plus 5 tan squared straight A over denominator 4 tan squared straight A minus sin squared straight A end fraction space you space will space get space the space answer. end style](https://images.topperlearning.com/topper/tinymce/cache/0431c2bfc8aec4b0e5e13642e2c01b1c.png)
Answered by Sneha shidid | 12 Feb, 2018, 09:18: AM
ICSE 9 - Maths
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