Math, asked by Bakor, 1 year ago

If sec A =5/3, verify that 4cos cube A - 3cos A /3sin A - 4sin cube A​

Answers

Answered by vibhwizard
1

Step-by-step explanation:

sec a = 5/3

cos a = 3/5

cos³a = 27/125

sin a = 4/ 5

sin³a = 64/125

putting in the question

4 × 27/125 - 3 × 3/5

---------------------‐-----------

3 × 4/5 - 4 × 64/125

108 - 225 / 125

-------------------------

300 - 256 /125

-117 / 74

answer

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